💥 New (old) science drop: Cortisol was the only hormone that actually tracked lean‐mass gains—while GH, IGF-1 & Testosterone showed zero correlation with hypertrophy or strength! 📊💪 Why? All that talk about chasing post-workout “anabolic” spikes? It’s mostly hype. 🤯 Time to focus on what really moves the needle. 🔍 Dive deeper: West & Phillips found cortisol AUC vs. ΔLBM r=0.29 (P=0.03)—no such luck for GH, IGF-1 or T link.springer.com/article/10.1007/s00421-011-2246-z (DOI: 10.1007/s00421-011-2246-z) 🔍 For the full myth-busting primer on endogenous hormones in muscle growth, see “Hormones, Hypertrophy, and Hype” journals.lww.com/acsm-essr/fulltext/2024/10000/hormones,_hypertrophy,_and_hype__an.2.aspx (DOI: DOI: 10.1249/JES.0000000000000346) It's time to stop all the BS talk about how cortisol is the bogey-hormone destroying your gains, causing you to gain fat mass, and wrecking your metabolism. As an indicator of stress, cortisol, epinephrine (adrenaline)...