The Fittest Women on Fall TV

Kaley Cuoco, The Big Bang Theory

Penny, Cuoco's character on The Big Bang Theory may be a terrible driver, but maybe that's because she prefers horses? When she's not acting, Cuoco's go-to form of sweat is a horseback ride, which works her core, butt, and legs while helping her chill out. When a stable isn't available, she takes up Spinning. We'll pass on the horses, but we wouldn't mind being on a bike next to this funny gal.