There was a time when the optimal exercise speed was however fast you had to run to get away from a saber-tooth tiger. Even today, in much of the developing world, people exercise through activities ...

Your running speed partly comes down to factors you can't control, like genetics, and partly relies on your training. When you purchase through links on our site, we may earn an affiliate commission.

If you’re looking to add variety and intensity to your training plan, check out the sled push — an excellent exercise for overall conditioning, strength development, improving speed and acceleration, ...