Add Yahoo as a preferred source to see more of our stories on Google. Most gyms have plyometric boxes. They're also found in parks with public workout areas. Photo: Getty Images Building body strength ...

There are two types of people in this world: those who love box jumps and those who despise them. If you're in the latter group and box jumps are too harsh your knees — or you're just afraid of ...

Push-ups are a full-body exercise that mainly strengthens your upper body. Doing variations of the push-up can help keep any bodyweight routine interesting and effective. Variations like the box ...