How do I know when to change clasps?Updated 2 days ago

No earlier than three weeks, please. Each level is designed to be lived in for at least three weeks so your body has time to adapt, build endurance, and develop real muscle memory before you add more tension.

The best signal that you're ready to progress is when your current setting starts to feel easy, meaning you barely notice the pull anymore and it no longer creates that gentle end-of-day fatigue in your upper back. That's your cue to tighten the straps one level and deepen the work.

This gradual, progressive approach is the whole point. Moving up too soon tends to create strain rather than results, so let your body set the pace.