7 gentle moves × 3 seconds each—trainers prove 24% less fall risk in 12 weeks
Your timer reads 21 seconds. You stand on one leg in your kitchen, wobbling at second five. Three weeks ago, this same test lasted barely three seconds. Today marks a transformation that fitness experts with NASM credentials call micro-duration activation. Research from certified personal trainers studying women over 50 reveals that specific 3-second holds trigger … Lire plus








