Staying comfortable during training (and recovery) comes down to smart fabric choices, thoughtful design, and secure storage. These 15 men’s activewear picks balance fit and function for running, studio work, strength sessions, and everyday movement. Ten Thousand Interval Short — Best all-around training short What it is: A lightweight, do-everything short with optional liner and secure storage. Why it works: The Interval Short is built for versatility with a quick-drying stretch shell, no-bounce phone pocket, and gusset for mobility. Ideal...