Protein 101 — What Active Men Actually Need

Protein gets more marketing noise than almost any other nutrition topic, which makes the actual guidance easy to miss underneath it.

The UK's baseline Reference Nutrient Intake for protein is 0.75g per kilogram of bodyweight per day for a sedentary adult — a minimum designed to prevent deficiency, not a target for anyone training regularly. For an 80kg man doing little structured exercise, that's roughly 60g a day, which most people eating a normal varied diet already reach without trying.

Once you're training consistently, that number moves. General guidance for people doing regular resistance or strength training points toward roughly 1.2–1.6g per kilogram of bodyweight per day, with some sources citing a safe upper range as high as 2.0–2.2g/kg for those training intensively. For that same 80kg man training two or three times a week, that's somewhere in the region of 100–130g a day — not an extreme number, and achievable through food.

Where it actually comes from:

• Eggs, chicken, fish, and lean red meat
• Greek yoghurt, cottage cheese, and milk
• Beans, lentils, and tofu — useful for anyone reducing meat intake, though usually eaten in slightly larger portions to match the protein content of animal sources
• Protein shakes are a convenient top-up, not a requirement — food gets most men there on its own

A few things worth knowing:

• Spreading protein across three or four meals a day, rather than loading it all into one, appears to support muscle maintenance better than eating it all at once — this matters more as men get older, since the body's response to protein becomes less efficient with age.
• Protein deficiency is genuinely rare in the UK. If you're eating a varied diet with regular meat, dairy, or legumes, you're very likely closer to target than the supplement industry would have you believe.
• More isn't automatically better. Protein intake beyond what your body can use for repair and muscle building doesn't build extra muscle — it just gets used for energy or stored. There's no need to chase very high numbers on the assumption that more always helps.

The takeaway isn't "eat more protein than you think." It's "know roughly where your target sits, and get there through food you'd eat anyway."