Protein first, everything else second

Of all the nutrition arguments on the internet, protein is the one that quietly got settled. Eat enough of it and most other decisions get easier. Here is the whole playbook.

Your number

Published sport nutrition ranges run from 1.2 grams per kilogram for generally active people up to 2.4 while cutting. The calculator does the math in seconds. A 170 pound lifter aiming to build lands around 120 to 170 grams a day, which sounds enormous until you see it as four meals of 30 to 40.

Food does the heavy lifting

A supplement store telling you to eat real food feels backwards. It should not. Chicken thighs, eggs, greek yogurt, canned fish, beans, cottage cheese. Cheap, boring, effective. Build each meal around one of those and the daily number mostly takes care of itself.

Powder earns its spot in exactly three situations:

1. The 7am train, where nobody is cooking eggs.
2. Post training, when appetite is gone but the window is open.
3. The end of a long day when you are 35 grams short and dinner already happened.

Which powder, plainly

Situation	Provision	Why
Default	Workhorse Whey	Complete protein, about 24 g a scoop, mixes in water without theatrics
Dairy argues back	Second Stage Isolate	Most of the lactose filtered out, slightly leaner panel
Plants only	Terra Firma	Pea and rice cover the amino spread that either one alone misses

The myths, retired

No, high protein does not wreck healthy kidneys. The research on that question is old, large and consistent. No, you cannot only absorb 30 grams per meal; absorption slows, it does not stop. And no, more is not endlessly better. Past your range, extra protein is just expensive calories.