For better hand strength and wrist mobility: Grab a rubber band, put it around the tips of your fingers, and stretch out your hand. “If one band gets too easy, put two or more on! This is a super easy exercise to do while you’re on a phone call or a conference call. It gets the blood moving through the hands and helps balance out your vice-grip like hands.” — Jim Bathurst, head trainer, Nerd Fitness, Washington, D.C.

Related: Six Ways You’re Sabotaging Your Workouts