
Hitting 40 isn’t the end game for your fitness. It just means it’s more important than ever to keep exercising and choose movements that help stave off the natural effects of aging.
"Once you hit 40, your body starts losing muscle mass at about 8% each decade," Brittni Johnson, a certified Pilates instructor with the fitness and wellness app BetterMe, explains. "That means getting weaker, stiffer and less steady on your feet, which makes simple daily tasks harder than they used to be."