Short runs hide a lot of design flaws. But once you start pushing your mileage or training through summer humidity, a bad base layer is impossible to ignore. From built-in liners to everyday cotton...

Chafing, ride-up, and overheating don't show up at the start line. They show up at kilometre 15. Here's how the major brands compare, and what to look for in running underwear that actually holds up.

Prevent inner-thigh chafing while running by understanding what causes friction and how runners reduce it. Learn the simple adjustments to fabric, fit, and gear that help keep runs comfortable.

Underwear that rides up isn’t bad luck, it’s a design flaw. Here’s why it happens and what to look for in performance underwear that actually stays in place.