A personal trainer says this is the one exercise everyone should be doing to stay mobile and strong as you age

Two women squat while facing each other. They are in a sparse, white space, and are wearing athletic leggings and tank tops, and are barefoot .

Did you know you may lose up to 8% of your muscle mass every decade after your 30s, and the speed of muscle loss increases after your 60s? But you can keep hold of that muscle—as well as staying strong and mobile and keeping aches and pains away—if you make strength exercises part of your routine. It doesn’t have to be complicated, either.

Personal trainer and founder of the women's fitness franchise VICTRESS MVMT Stacy Orsborn says one simple exercise will help you maintain and build muscle mass, and keep your joints healthy no matter your age—the squat.