BCAAs (branched-chain amino acids) quebra um jejum?
BCAAs (branched-chain amino acids) quebra o jejum. Fornece calorias significativas ou dispara uma resposta de insulina que encerra o estado metabólico em jejum.
Calorias
~20–40 kcal per serving (4–8 g BCAAs)
Por quê — a lógica de caloria e insulina
BCAAs — leucine, isoleucine, and valine — are amino acids that directly stimulate insulin secretion, particularly leucine. They also directly activate the mTOR pathway, which suppresses autophagy. Even a small BCAA serving provides meaningful amino acids that signal an anabolic (fed) state to the body.
Isso depende do seu objetivo de jejum?
BCAAs break a fast for autophagy (direct mTOR activation from leucine) and for strict metabolic fasting (insulin response). For muscle-preservation goals during weight-loss fasting, some practitioners take BCAAs around workouts despite this, accepting that the fast is technically broken. If your goal is pure autophagy or maximum metabolic benefit, skip BCAAs during the fasting window.
Perguntas frequentes
- Do BCAAs break a fast?
- Yes. BCAAs contain amino acids that stimulate insulin release and activate mTOR, directly suppressing autophagy and ending a metabolic fast. They are best taken within the eating window.