Shelby Chesnes is a surfer, stand-up paddleboarder, and all-around fitness and nutrition buff. "Growing up in (Jupiter) Florida, I was always outdoors," says the 21-year-old, who is Playboy's Miss July. "After graduation, I became obsessed with exercise and nutrition, so now I work out almost every day. It makes me happy and helps me feel good about my body and myself." Chesnes, a budding entrepreneur who opeates a mobile spray tanning business, joins us in this edition of The Fitness Buff Show.