Katie Ledecky Shares Her Favorite Activewear Essentials to Kick Off the Olympics

Athleta Mesh Racer Run Mid Rise 4 Short ($49)

Harsher workouts often call for breathable, low-key styles that can keep up with you — and help keep you cool. "In practice, I often push myself to the point of exhaustion to prepare for competitions, maintaining mental toughness and resilience," says Ledecky. These workout shorts are made from a mesh material that promotes more consistent airflow, especially during long- or short-distance runs.