Train your legs to use more of the pedal stroke, and you'll become a more efficient cyclist, which means you'll go farther and faster with the same effort. "A full stroke uses a lot of muscles when done correctly: glutes, hamstrings, quads, psoas, calves—nearly all the muscles in your legs," Cree says. Many beginners focus only on the downstroke. "That will keep you upright and propel you forward, but it's far from efficient," he says.