Underbody rust explained: When to be concerned, what to do about it

Fortify Training on Instagram: "Age is just a number. Every week members inside the Calisthenics Inner Circle are setting PRs and changing their lives through Calisthenics and the power of community. 💪 • Chris (53): hit his first muscle-up • James (47): stacking chin-up & pull-up PRs • Jon: started the Elbow Lever in a monthly challenge—now holding for time • Nate: Wanted better hip mobility, now doing Cossack squats for reps. • Jim: leveled up pressing to handstand push-ups and one-arm push-up