In metabolic ward studies, escalating protein and calorie intake leads to gains in lean mass and fat mass.

“There was a metabolic ward study done in 2013-ish by Bray and colleagues, where they subjected the participants to escalating amounts of protein. And it was a protein overfeeding study. There were three levels of protein intakes. There was 5% protein diet, a 15% protein diet, and a 30-ish% protein diet. The total calories escalated too. There was no exercise involved with this metabolic ward study. And the subjects gained both lean mass, and fat mass with the escalating protein amounts.”