How Much Protein Do You Actually Need Each Day?

Most people are either eating far too little protein and wondering why they’re not seeing results — or overcomplicating it with powders, timing windows, and conflicting advice from every corner of the internet.

The truth is simpler than the fitness industry wants you to believe. Here’s what the research actually says, what works in practice, and how to figure out the right number for your body and your goals.

So, How Much Protein Do You Actually Need?

The UK government’s Reference Nutrient Intake sits at 0.75g of protein per kilogram of bodyweight per day. For a 75kg person, that’s roughly 56g — about the protein in two chicken breasts.

That number is enough to prevent deficiency. It is not enough to build muscle, support fat loss, or get meaningful results from training.

For anyone who is actively exercising — particularly those focused on fat loss or muscle building — the evidence points to a significantly higher target. Most sports nutrition research supports a range of 1.6g to 2.2g of protein per kilogram of bodyweight per day for people with body composition goals.

For that same 75kg person, that’s 120g to 165g of protein daily. A very different number to the government guideline — and the gap is where most people’s results disappear.

Why Protein Matters More Than Most People Realise

Protein is not just a muscle-building nutrient. It plays a central role in almost every body composition outcome:

Fat loss. Protein has a higher thermic effect than carbohydrates or fat — your body burns more calories simply digesting it. It also keeps you fuller for longer, which reduces overall calorie intake without requiring willpower or restriction. In our fat loss nutrition work with clients, increasing protein is almost always the first and most impactful change we make.

Muscle building. Muscle protein synthesis — the process by which your body repairs and builds muscle tissue after training — is directly driven by dietary protein. Without enough of it, training stimulus goes to waste. You can train perfectly and eat poorly and see minimal results. This is one of the most common patterns we see with new clients.

Muscle preservation during a calorie deficit. When you cut calories without adequate protein, your body breaks down muscle tissue for energy alongside fat. The result is weight loss, but not the body composition change most people are after. Higher protein intake protects lean muscle while the fat comes off — which is why protein targets don’t reduce when you’re in a deficit. If anything, they increase.

Satiety and adherence. A high-protein diet is simply easier to stick to. You’re less hungry, less likely to snack impulsively, and less likely to abandon the plan after two weeks.

Protein Targets by Goal

Here’s a simple breakdown based on what we use with clients at Tempo Performance:

These are daily targets, spread across meals. Your body cannot use an unlimited amount of protein in a single sitting — research suggests 30–40g per meal is an effective working dose, with diminishing returns beyond that.

Best Protein Sources — Real Food First

Supplements have their place, but whole food sources of protein should form the foundation of your intake. Here are the most practical options:

Animal sources:

• Chicken breast — 31g protein per 100g
• Lean beef mince — 26g per 100g
• Salmon — 25g per 100g
• Eggs — 6g per egg
• Greek yoghurt — 10g per 100g
• Cottage cheese — 11g per 100g

Plant sources:

• Tofu — 17g per 100g
• Tempeh — 20g per 100g
• Lentils — 9g per 100g (cooked)
• Edamame — 11g per 100g
• Chickpeas — 9g per 100g (cooked)

Plant proteins are valuable but typically lower in leucine — the amino acid most directly responsible for triggering muscle protein synthesis. If you’re plant-based, aim toward the higher end of the protein range and prioritise leucine-rich sources like soy, edamame, and tempeh.

What About Protein Shakes?

Protein shakes are a convenient tool — not a necessity. If you’re consistently hitting your daily target through whole food, you don’t need them. If you’re struggling to reach your numbers through meals alone, a quality whey or plant-based protein shake is a practical and effective top-up.

What they won’t do is compensate for a poor overall diet. A shake alongside three low-protein meals is still a low-protein day.

Common Protein Mistakes We See in London Clients

Eating most of their protein at dinner. Spreading protein intake across three to four meals is more effective for muscle protein synthesis than front- or back-loading. Aim for 30–40g per meal rather than 10g at breakfast, 15g at lunch, and 70g at dinner.

Relying on processed high-protein products. High-protein cereal bars, flavoured yoghurts, and protein-fortified snacks often contain 10–15g of protein alongside significant sugar, palm oil, and additives. Real food is almost always a better option.

Not adjusting for body weight. Protein needs scale with lean body mass, not total body weight. If you carry a significant amount of body fat, basing your target on total bodyweight will overestimate your needs. A nutrition coach can help you calculate a more accurate target based on your lean mass.

Assuming more is always better. Beyond around 2.4g per kg bodyweight, additional protein provides minimal extra benefit for most people. Eating 300g of protein a day when 160g would do is not harmful — it’s just unnecessary, expensive, and leaves less room for carbohydrates and fats that also play an important role in performance and recovery.

How to Hit Your Protein Target Every Day

This is where most people struggle — not with understanding the numbers, but with consistently hitting them. A few practical strategies:

• Anchor every meal around protein first. Build your breakfast, lunch, and dinner around the protein source, then add everything else around it.
• Prepare protein in advance. Batch cook chicken, hard boil eggs, or keep Greek yoghurt and cottage cheese ready. When protein is convenient, you eat it.
• Use breakfast as an opportunity. Most people front-load carbohydrates at breakfast — toast, cereal, porridge — and leave protein to dinner. Eggs, smoked salmon, or a protein shake in the morning changes the trajectory of the whole day.
• Track for two to three weeks. You don’t need to track forever. But spending a few weeks logging your intake will recalibrate your awareness of what you’re actually eating — and most people find the results genuinely surprising.

Conclusion

Protein is not a trend. It is the single most important dietary variable for anyone who wants to change their body composition — whether that means losing fat, building muscle, or both at the same time.

The number most people need is significantly higher than they think, more achievable than it sounds, and easier to hit consistently once the right habits are in place.

If you’re serious about your nutrition and want a plan built around your specific goals, body, and lifestyle, working with a nutrition coach in London makes the process considerably faster and more effective. At Tempo Performance, nutrition is built into every programme from day one — not bolted on as an afterthought.