You know how long distance runners dont work out their upper body….what about sprinters?
Long distance runners (the good ones, at least) do workout their upper body. They don’t work out to build mass, but lean strength and endurance. A workout is designed complement your running, and distance runners want lean muscle overall, not just their legs. Take a look at Tyson Gay and Usain Bolt. Do you think those guys lift weights? When you run, your arms and legs create torque about your spine (more correctly, they are creating rotational momentum). This needs to be balanced – which is why your left arm and right leg come forward at the same time, producing opposing momentum, and your arm has to move faster because it has less mass, allowing it to produce enough momentum to balance the larger leg mass. At high speeds encountered in sprinting, this momentum is much greater. A strong upper body, with enough muscle mass, allows for the balance. If you don’t have this, your body must find other ways to deal with the torque and momentum created by your legs. This is often done by the
