
The step-up works the thighs and glutes, one leg at a time.
Stand facing a stable bench or box, holding a dumbbell in each hand, and place one full foot on the bench.
Push through the planted foot to step up onto the bench, then descend with control using the same leg.
Avoid helping yourself by pushing off with the floor leg. Alternate or do one side at a time.
Image and text: Bryl Lim / Everkinetic — recoloré et rastérisé — CC BY-SA 4.0, via Workout Guide. Original entry