There have been many times where our consulting firm has done nothing to adjust overall calories, adjusted only the macronutrient ratio, and fat loss has taken off as a result. (anymanfitness.com)
Protein, being the only macronutrient that directly stimulates muscle protein synthesis, is a crucial component of muscle growth and effective post-workout recovery (and muscles grow while you rest, not while you train). (fitnessandpower.com)
Since we can't make proteins from scratch, and we can't store excess protein, protein is the only macronutrient that we absolutely must eat regularly in order to thrive. (diagnosisdiet.com)