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The Science of Post Workout Recovery: How to Maximise Muscle Growth and Repair

22nd April 2024

22nd April 2024

By Shivraj Bassi

Training hard and challenging yourself during your workouts is key to progressing and building muscle, but did you know the true growth happens outside of the gym? To build new muscle effectively, it’s vital to optimise your recovery process, restoring energy and providing your body with the nutrients it needs to grow. Today, we’ll look into what happens to your body post workout and what you can do to maximise your results, leading to faster recovery and better gains.

What Happens Post Workout?

Strenuous training, whether that be resistance raining with weights, calisthenics, HIIT or even cardio, causes microscopic tears in your muscle tissue, which can lead to soreness and fatigue. This often happens a day or two after the workout and is known as DOMS (Delayed Onset Muscle Soreness). DOMS is completely normal and nothing to worry about, but it’s a good sign that your body is in need of support! With proper nutrition and recovery protocols, DOMS should go away in 2-5 days. If it persists for longer then this may be a sign of an injury and you may need medical attention. So, we know that we may experience some soreness after a workout, but what is happening as a response to that? Well, the body undergoes a number of physiological processes, each of which is important to understand and consider if we are to best optimise our recovery. 

Protein Synthesis

Protein synthesis is the most crucial part of muscle repair. Following a workout, your body activates pathways that increase the production of new proteins, essential for rebuilding damaged muscle fibres. To do this effectively, however, you must consume an adequate amount of protein. As amino acids are the building blocks of protein, it’s important to ensure that the protein sources you consume are complete, meaning they contain all the amino acids. Supplementing with a protein powder, such as our own Strong Protein, can assist with this.

Many fitness enthusiasts once hypothesized that there was an ‘anabolic window’, or a set period of time within which you needed to consume protein post workout in order to grow effectively. This has since been proven to be a myth, but the idea is rooted in common sense. Since training causes muscle damage, it’s logical to kick start the recovery process as soon as possible by consuming the nutrients needed for it. So, whilst you won’t lose all your gains if you don’t eat right after a workout, it certainly does make sense!

Inflammation and Immune Response

While inflammation often has negative connotations, it plays a vital role in muscle repair. Exercise-induced muscle damage triggers an inflammatory response, recruiting immune cells to the damaged site. This process clears debris and initiates tissue repair. However, excessive inflammation can impede recovery, emphasizing the importance of managing inflammation post-exercise. Techniques such as foam rolling, coupled with adequate nutrition and sleep, are great for reducing inflammation to manageable levels.

Glycogen Replenishment

Glycogen is glucose that is stored in muscle tissue. It is used as a primary energy source by your muscles, especially during intense activity such as weight training. Glycogen is also what’s responsible for the ‘full’ look of muscles; when your glycogen stores are depleted it can make your physique look flat and your muscles feel smaller. This is nothing to worry about though! It’s just a sign that you need to replenish your glycogen levels, which can be achieved by consuming carbohydrates with a high glycaemic index. Foods such as white rice and potatoes are ideal for this, though supplementing with a carbohydrate powder such as cyclic dextrin or Vitargo may also be of benefit if you’ve had a particularly intense session.

The Most Important Things to Optimise for Maximum Muscle Growth

Nutrition

A balanced post-workout meal containing protein and carbohydrates is essential for muscle recovery. Aim for a protein source rich in essential amino acids, such as chicken, fish, eggs, or plant-based options like tofu or legumes. Pair it with carbohydrates to replenish glycogen stores and facilitate protein synthesis. Additionally, incorporating anti-inflammatory foods like berries, leafy greens, and fatty fish can help manage post-exercise inflammation.

Hydration

Dehydration can impair muscle recovery and performance. Adequate hydration is essential for nutrient transport, waste removal, and maintaining cellular function. Replenish lost fluids by consuming water or electrolyte-rich beverages post-workout. Electrolytes like sodium, potassium, and magnesium play vital roles in muscle function and overall hydration. 

Rest and Sleep

Rest is as crucial as exercise for muscle recovery. During sleep, the body releases growth hormone, facilitating tissue repair and regeneration. Aim for 7-9 hours of quality sleep per night to optimise muscle recovery. Additionally, incorporating rest days into your workout routine allows you muscles time to repair and adapt to training stimuli. 

Active Recovery

Engaging in low-intensity activities like walking, yoga, or swimming on rest days promotes blood flow to muscles, aiding in nutrient delivery and waste removal. Active recovery accelerates the clearance of metabolic byproducts, reducing post-exercise soreness and enhancing recovery. 

Foam Rolling and Stretching

Foam rolling and stretching can alleviate muscle tightness and improve flexibility, enhancing overall recovery. These techniques increase blood flow to muscles, reducing inflammation and promoting relaxation. Incorporate foam rolling and stretching into your post-workout routine to promote accelerated recovery and reduce the chance of injury.

Supplements

While whole foods should be your primary source of nutrients, supplements definitely have their place in your post-workout recovery regimen. A high-quality protein powder should be your first purchase, along with a good multivitamin. From here, you can consider what will best help you achieve your goals. For optimal recovery, we highly recommend our own Recover Capsules, which are specially formulated to aid your recovery process, reduce inflammation and regulate your hormones.

Getting the best results from your training is a complicated puzzle with many pieces. Even with the perfect workout plan, your results will be compromised without adequate nutrition and adhering to proper recovery protocols. We hope that this guide to post exercise recovery helps you in your own training, but if you do have any questions, why not book a consultation today with one of our dedicated nutritionists? They’ll be able to best advise on your current routine and help you get the most out of your workouts with proper supplementation and nutrition. Above all, enjoy your workouts and embrace a fitter, healthier lifestyle today!

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Why Natural Protein Supplementation Matters
Walk into any health shop, or scroll any supplement site, and you often find that protein powders start to blur into one. Almost all of them make the same promises on the front: ‘high in protein’, ‘no added sugar’, ‘no additional additives’. The wording is so similar that telling a genuinely good product from a synthetically produced product is harder than it should be. Read past the figure on the front however and you'll usually find a protein that contains artificial sweeteners, synthetic flavourings and colours, and even fillers or bulking agents just to name a few. The reason they tend to do this is that costs of production are much cheaper as a result of the lower quality ingredients. A naturally formulated protein supplement works the other way around. The protein comes from a quality source, the flavour and sweetness come from ingredients you'd recognise rather than ones built in a lab, and anything that doesn't need to be there is left out. This piece is about that difference: what natural really means for a protein supplement, why it matters, and how to spot it for yourself. What "natural" actually means in protein supplements "Natural" is one of the most used and least understood words in wellness, printed on plenty of labels with very little behind it. There's no strict, regulated definition for it, so a brand can reach for the word fairly freely. This is why it pays to know what you're actually looking for. Used honestly, natural points to ingredients that come from recognisable sources and are processed as lightly as the format allows. For protein, that usually means a base derived from food such as: Whey Pea Hemp Brown rice Other plant-based proteins Just as telling is what gets left out, and how openly the packaging accounts for what stays in. A natural protein supplement has little to hide, so the label tends to be short and the reasoning easy to follow. The real test is whether the formula makes sense as a whole. Can you understand what's in it? Does each ingredient have a clear purpose? And does the brand explain the benefit plainly, rather than hiding behind vague wellness language? Why ingredient quality matters in protein supplements When people compare protein powders, the first thing they often look at is the amount of protein per serving. It matters, but this number doesn’t tell you everything about a supplement’s quality. A synthetically formulated powder may contain just as much protein per serving as a natural alternative, but it may also include more artificial additives that are bad for your health.  This is especially important as supplementation is usually taken regularly as part of a daily routine. If something becomes part of your breakfast, post-workout routine or afternoon shake, the quality of the overall formula may influence how well it fits into your daily routine. Natural protein powders are often separated by a few key criteria: Ingredient sourcing: Whey is highly bioavailable and naturally rich in essential amino acids that support muscle repair. A good plant-based blend can also be effective when it is built to provide a strong amino acid profile. What surrounds the protein: Sweeteners, thickeners and flavourings affect taste, texture and how a shake feels once you have taken it. Some formulas rely heavily on artificial sweeteners, gums or thickeners, which may contribute to bloating or digestive discomfort. Digestibility: A protein you absorb and tolerate comfortably is more useful than a bigger number on the label that does not sit well with your body. Purpose: A formula built around a specific goal, such as strength, performance, energy or satiety, is more useful than a generic powder with no clear reason behind the ingredients. The benefits of natural protein supplementation The real value of natural supplementation becomes clearer when you look beyond protein content alone. Below are some of the key benefits of choosing natural protein supplements over more artificial or heavily processed alternatives. Supporting strength and lean muscle Building strength and lean muscle is one of the main reasons people turn to natural protein supplements.  A good one supports muscle repair after training and helps maintain muscle over the longer term. That's especially useful if you train regularly and eat well but can't always put together a high-protein meal straight after a session. Helping with recovery after exercise After a workout, your body needs nutrients to repair and adapt, and protein is central to that process, particularly if you train several times a week. A natural protein supplement offers a convenient way to support recovery without making nutrition feel complicated, whether mixed into a shake, smoothie or simple post-workout snack. Supporting satiety and body composition goals Protein keeps you feeling fuller for longer, which makes balanced eating easier to stick to.  For anyone working towards fat loss, lean muscle or general body composition, natural protein supplementation helps steady your daily nutrition alongside whole foods, movement and rest, without relying on the added sugar that some cheaper formulas contain. Making daily nutrition easier Even with good intentions, it is not always easy to get enough protein through meals alone. Busy days, training schedules and travel can all make consistency harder.  A natural protein gives you a simple, repeatable way to keep your intake up on the days that get away from you, using ingredients you can actually recognise. Natural supplementation doesn't have to taste bland There's a common assumption that natural supplements have to taste bland, chalky or unpleasant. Plenty of people have met exactly that: a protein that sounds healthy on paper but turns out too earthy, too sweet or too gritty to enjoy. It gets used for a few days, then pushed to the back of the cupboard. The problem there is usually the formulation, not the missing additives. Chalky, overly sweet shakes come from corners being cut. Getting flavour and texture right without falling back on heavy sweeteners is genuinely hard, which is a good sign a brand has done the work. Taste matters for a practical reason as much as an enjoyable one. A protein you look forward to is one you'll keep using, and consistency is what actually delivers results. The best-formulated supplement on the shelf does nothing while it sits unopened. The innermost approach to natural protein Everything above is the standard we at Innermost hold ourselves to. Our proteins are built on clean and naturally-derived ingredients, formulated with the backing of nutritional science rather than guesswork. We leave out the fillers, bulking agents and needless extras that have no business being in a quality protein, and we're open about what goes in and why. We also happen to think clean and natural should taste good, because a protein you enjoy is a protein you'll actually use.  Explore our protein powders to find the formula that best fits your goals, routine and lifestyle. References Morton, W., Murphy, T., et al (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. Br J Sports Med. 52(6). Click here. Jäger, R., Kerksick, C., et al (2017). International Society of Sports Nutrition Position Stand: protein and exercise. J Int Soc Sports Nutr. Click here. Seijo, M., Naclerio, F. (2019). Whey Protein Supplementation and Muscle Mass: Current Perspectives. Click here. Read more
The Protein Mistake That's Holding Back Your Results
I've written at length about creatine. I've written about collagen, electrolytes, the GLP-1 moment, even the science of sleep. But I've never written a personal email about protein. That's a strange omission for someone who built a brand that makes some pretty ground-breaking protein powders. So let me explain why, and then actually say the thing I've been avoiding. Protein is the most foundational supplement in the Innermost range. It's also the hardest subject for me to write about personally, because there's nothing surprising about it. Creatine had a story. Collagen had a story. Protein is well... protein. Everyone knows you should eat more of it. The mechanism is not a secret. Muscle protein synthesis, leucine threshold, net nitrogen balance. If you've been in the fitness space for more than a couple of years, you've read this before. And I think that's the problem. The familiarity makes people stop paying attention. Here's what I actually think about protein, after a decade of working in this space. Most people in their thirties and forties are under-consuming protein and don't know it. Not by a small amount. The gap between what most people eat and what the research supports for muscle maintenance and body composition outcomes is significant. Studies looking at optimal intake for adults prioritising body composition consistently point to between 1.6 and 2.2 grams per kilogram of bodyweight per day. Most people are eating somewhere between 0.8 and 1.2. The difference is not cosmetic. Adequate protein intake directly affects your ability to preserve muscle tissue during a caloric deficit. It supports recovery between sessions. It has a measurable effect on satiety, which means it influences total caloric intake downstream, not just at the point you consume it. There's a subtler point too, and this is the one I've come to think matters most: protein is the nutrient where consistency compounds most directly. The benefits of creatine saturate over time in a relatively predictable way. Collagen has a timeline that research measures in months. But protein's effect on body composition is essentially continuous. Every day you hit your target, you preserve something. Every day you don't, you lose a small amount of ground. Over a summer, that adds up. This is what I've observed personally, and it's backed by the research on muscle protein turnover. The people who maintain their body composition through summer are not, in my experience, the people who train harder during that period. Most of them train less. Their routines are disrupted. They're travelling. Their eating is less structured. The people who come back in September looking broadly the same as they left in June are the ones who kept their protein intake consistent. That's it. That's the variable. Why I take The Lean Protein I’ve been taking The Lean Protein the past few months for a straightforward reason: the protein-to-calorie ratio. Much like our other protein blends, each serving delivers over 30 grams of protein. The calorie count is low relative to that protein yield. When my training is consistent and my eating is structured, I don't think about this very much. But in the periods when those things are less reliable, that ratio becomes the thing that holds the rest together. The formula also includes acetyl-L-carnitine, inulin, pomegranate extract, and yerba mate. These aren't afterthoughts. Acetyl-L-carnitine has a research base in fat metabolism. Inulin supports satiety and gut function. The pomegranate extract is included for its antioxidant contribution to recovery. This means that the formula does more work per serving than a standard whey and just what I need going into summer. The thing the industry gets wrong about protein Most protein marketing leads with taste and price per gram. Both matter. But neither tells you whether the formula will support body composition outcomes over time. The two questions I'd ask before buying any protein powder are: what is the actual protein-to-calorie ratio, and what is the leucine content per serving.  Leucine is the branched-chain amino acid most directly linked to triggering muscle protein synthesis, and there is a threshold dose, roughly 2.5 to 3 grams per serving, below which the anabolic response is blunted. Many protein powders do not disclose this. They just list total protein and move on. The Lean Protein does not have this problem. The formula is transparent. The dose is evidence-based. One thing I'd ask you to consider: if you've never actually checked whether you're hitting your protein targets, try tracking it for three days. Most people find the gap is larger than they expected. If you're not sure which Innermost product fits your specific goal, the quiz on our site is a good place to start. Find the right protein for your goal   Read more