Stand facing a plyometric box with your feet about shoulder-width apart. Lower slightly into a partial squat and swing your arms back to generate momentum. Explosively jump onto the box, landing softly with bent knees and stable posture. Step or jump back down and repeat, focusing on controlled landings and powerful takeoffs to develop lower-body power, coordination, and athletic explosiveness.
Log your 1 to 2 jump box sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.