Hi,
Protein is the one thing almost everyone in fitness agrees on and still gets wrong.
"You need 1g per pound. You have to eat it within 30 minutes of training. More is always better."
Some of that is true. Most of it isn't. Here's what the research actually says.
P.S. I've built a free calorie calculator and a 30-day fat loss blueprint. No sign-up hoops, just tools that work. [Get free access here.]
HOW MUCH DO YOU ACTUALLY NEED?
The government RDA is 0.8g per kilogram of body weight. That's enough to prevent deficiency, not enough to build or maintain muscle, especially if you're training or in a calorie deficit.
The International Society of Sports Nutrition recommends 1.4 to 2.2g per kg per day for active people. For most men trying to lose fat and keep muscle, aiming for around 1.6 to 2g per kg is the sweet spot supported by research. For an 85kg man, that's roughly 135 to 170g per day.
More than that? A meta-analysis examining intakes above 2.2g per kg for six to twelve months found no additional benefit for muscle or strength, and no harm either. Going higher won't hurt you, but it probably won't help much beyond a point.
THE 30-MINUTE WINDOW IS (MOSTLY) A MYTH
The "anabolic window," the idea that you must consume protein within 30 minutes of training or your workout is wasted, has been one of the most persistent myths in fitness.
A 2025 systematic review and meta-analysis confirmed that protein timing does not significantly enhance muscle strength or size when total daily intake is matched. The original studies showing a benefit? They were comparing people who ate more total protein against people who ate less. It was the extra protein that helped, not the timing.
Does this mean post-workout protein is pointless? No. If you haven't eaten in several hours before training, eating soon after makes sense. But if you had a meal two hours before, you're not racing a clock.
The window is measured in hours, not minutes. Total daily intake is what drives results.
THE MYTH: "PROTEIN DAMAGES YOUR KIDNEYS"
This one won't die. And the evidence is clear: there is no evidence that high protein intake harms the kidneys of healthy individuals. This has been studied repeatedly, including at intakes above 2.2g per kg over extended periods.
If you have existing kidney disease, that's a different conversation, work with your doctor. But for healthy adults, this concern is not supported by the science.
WHAT ACTUALLY MATTERS
Forget timing windows and gram-counting anxiety. Three things matter:
Total daily intake. Aim for 1.6 to 2g per kg of body weight if you're active and want to maintain or build muscle.
Distribution. Spreading protein across 3 to 4 meals (25 to 40g each) stimulates muscle protein synthesis more effectively than cramming it into one or two meals.
Quality during a deficit. When you're eating less overall, protein becomes even more important. It preserves muscle, keeps you fuller for longer, and has the highest thermic effect of any macronutrient, meaning your body burns more energy digesting it.
If you're only going to optimise one thing in your nutrition, make it protein. Not supplements. Not timing. Not the brand of powder. Just enough protein, spread across the day, from real food first.
ONE THING I'VE ADDED TO MY DIET
Hitting your protein target is easier when you find simple, portable options you actually enjoy. One I've added recently: Mini Babybel Light Cheese Snacks. 5g of protein per 20g portion, cheap, healthy, taste amazing, and you can carry them with you anywhere. I keep a few in my bag most days. Small wins like this add up fast when you're chasing a daily target.
See you next week,
Gabriel Nutrition Coach & Founder | gbMeals | The Fundamentals