A simple, real-life movement that improves lower-body strength, balance, and coordination while being easy on your joints.

Picture this: a single move that not only strengthens your key leg muscles (quads, hamstrings, and glutes) but also improves your balance, coordination, and yes, gets your heart pumping like a cardio ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. The muscles in your lower ...

Meredith Dietz is Lifehacker’s Senior Staff Writer. She earned her bachelor’s degree in English and Communications from Northeastern University, where she graduated as valedictorian of her college.