08/10/2026
🧠 QUIZ TIME! 💪🔥
Do you know which hormone is most directly involved in stimulating muscle protein synthesis through the mTOR pathway?
A. Cortisol
B. IGF-1
C. Aldosterone
D. Thyroxine
Drop your answer in the comments 👇
Let’s see who really knows their fitness science! 🏋️♂️