Maybe it’s genetics. Maybe it’s your atrocious running form. Maybe it’s because you still think stretching is optional. Whatever the reason, here you are—wheezing through workouts while wondering why some people make speed look effortless. Spoiler: it’s not effort. It’s biomechanics, training efficiency, and probably a little bit of not skipping leg day.

Lucky for you, there’s a solution. But first, you’ll have to admit there’s a problem. Start by figuring out what’s holding you back. Then fix it. Or don’t. Just don’t ask why you’re still getting smoked at the finish line. If you want to fix it, we’re here for you.