Why Protein Is the Foundation of Muscle Growth
Exercise breaks muscle tissue down. Protein rebuilds it — and builds it back slightly stronger each time. Without adequate dietary protein, even the best training plan will produce limited results. This isn't about extreme dieting or expensive supplements; it's about understanding how to eat in a way that supports your body's recovery and growth.
How Much Protein Do You Actually Need?
A common guideline used by sports nutritionists and researchers is roughly 1.6–2.2 grams of protein per kilogram of body weight per day for those actively trying to build muscle. For a 75kg (165lb) person, that works out to approximately 120–165g of protein daily.
You don't need to hit the top of that range to see results. Starting at the lower end and adjusting based on your progress is a sensible approach.
Best Protein Food Sources
| Food | Serving Size | Approx. Protein | Notes |
|---|---|---|---|
| Chicken breast | 150g cooked | ~45g | Lean, versatile, affordable |
| Eggs | 2 large eggs | ~12g | Complete amino acid profile |
| Greek yoghurt (plain) | 200g | ~17g | Also provides calcium and probiotics |
| Canned tuna | 1 can (~140g drained) | ~30g | Cheap and convenient |
| Lentils | 200g cooked | ~18g | Great plant-based option, high in fibre |
| Cottage cheese | 200g | ~24g | Slow-digesting, good before bed |
| Salmon | 150g cooked | ~34g | Also rich in omega-3 fatty acids |
Simple High-Protein Meal Ideas
Breakfast
- Egg scramble with vegetables: 3 eggs + spinach + feta = ~25g protein
- Greek yoghurt bowl: 200g yoghurt + berries + a tablespoon of nut butter = ~20g protein
- Overnight oats with protein: Rolled oats + milk + a scoop of whey or plant protein = ~30g protein
Lunch
- Chicken and rice bowl: 150g chicken breast + 1 cup brown rice + greens = ~50g protein
- Tuna wrap: 1 can tuna + wholegrain wrap + avocado + salad = ~35g protein
- Lentil soup: A generous bowl with wholegrain bread = ~22g protein
Dinner
- Salmon with sweet potato and broccoli: ~38g protein, well-balanced macros
- Turkey stir-fry: 200g turkey mince + mixed vegetables + noodles = ~42g protein
- Bean and tofu curry: Plant-based, ~28g protein per generous serving
Do You Need Protein Supplements?
Whole food should always be your primary protein source. Protein powders (whey, casein, or plant-based) are a supplement — useful for convenience, not essential for results. If you're consistently hitting your protein targets through food, you don't need a powder.
That said, a protein shake can be a practical post-workout option when you're short on time or appetite.
Timing: Does It Matter?
Research suggests that spreading protein intake across 3–5 meals throughout the day is more effective for muscle protein synthesis than eating most of your protein in one sitting. Aim to include a meaningful protein source at every meal rather than trying to hit your target at dinner alone.
Key Takeaways
- Aim for 1.6–2.2g of protein per kg of body weight if building muscle
- Prioritise whole food sources like eggs, chicken, fish, dairy, and legumes
- Spread protein intake across the day for best results
- Supplements are optional — consistency with real food wins long-term