This guide answers the most common questions about protein intake for gym-goers and active individuals. It covers how much protein is needed for muscle building and fat loss, the best food sources of protein, the role of protein supplements, and the facts behind common protein myths.
What Is Protein and Why Is It Important?
Protein is a macronutrient made up of amino acids, which are the building blocks of muscle tissue. It plays a central role in muscle repair, recovery, and growth following exercise. Protein is also important for immune function, hormone production, enzyme activity, and overall body composition.
For gym-goers, protein is the most important macronutrient to get right. Insufficient protein intake can result in slower recovery, reduced muscle gain, and greater muscle loss during fat loss phases.
How Much Protein Do You Need?
Protein requirements vary based on activity level, body weight, and training goals. The following table provides evidence-based guidance:
| Goal | Recommended Protein | Example (70kg person) |
| Sedentary adult (no exercise) | 0.8g per kg | A 70kg person needs approximately 56g per day |
| Recreational exerciser | 1.2–1.6g per kg | A 70kg person needs approximately 84–112g per day |
| Regular gym-goer (muscle building) | 1.6–2.0g per kg | A 70kg person needs approximately 112–140g per day |
| Advanced lifter or athlete | 2.0–2.4g per kg | A 70kg person needs approximately 140–168g per day |
| Fat loss phase (muscle preservation) | 2.0–2.4g per kg | Higher protein helps preserve muscle in a calorie deficit |
For most people training regularly at the gym, a target of 1.6 to 2.0g of protein per kg of bodyweight per day is a practical and well-supported guideline.
Best Food Sources of Protein
| Food Source | Approximate Protein Content |
| Chicken breast (100g cooked) | 31g |
| Tuna (100g, canned in water) | 25g |
| Salmon (100g cooked) | 25g |
| Eggs (2 large) | 13g |
| Greek yoghurt (200g) | 20g |
| Cottage cheese (200g) | 24g |
| Beef mince, lean (100g cooked) | 26g |
| Tofu (100g) | 8g |
| Lentils (100g cooked) | 9g |
| Chickpeas (100g cooked) | 9g |
| Whey protein shake (1 scoop) | 20–25g |
| Skimmed milk (300ml) | 10g |
Do You Need Protein Supplements?
Protein supplements such as whey, casein, and plant-based protein powders are not essential. They are a convenient way to increase protein intake when it is difficult to meet targets through whole foods alone.
Supplements should complement a diet based primarily on whole food protein sources, not replace them. Whole foods provide additional nutrients, fibre, and micronutrients that supplements do not.
When Should You Eat Protein?
Total daily protein intake is more important than precise timing. However, distributing protein evenly across meals can support muscle protein synthesis throughout the day.
| Timing Strategy | Benefit |
| Spread protein across 3 to 5 meals | Supports sustained muscle protein synthesis |
| Consume protein within 2 hours post-training | Supports muscle repair — the post-workout window is real but flexible |
| Include protein at breakfast | Helps manage appetite and supports muscle retention |
| Pre-sleep protein (casein or cottage cheese) | May support overnight muscle repair |
Common Protein Myths
| Myth | Reality |
| "Your body can only absorb 30g of protein per meal" | False — the body absorbs all dietary protein. However, muscle protein synthesis may be optimised at around 0.4g per kg per meal |
| "High protein diets damage the kidneys" | False for healthy individuals — research does not support this in people with normal kidney function |
| "You need protein immediately after training" | Partially true — a post-workout protein meal is beneficial, but the window is 1 to 2 hours, not minutes |
| "Plant protein is inferior" | Partly true — most plant proteins are lower in certain amino acids, but combining sources (rice and peas, or legumes and grains) provides a complete profile |
Key Takeaways