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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Box jumps are a staple of CrossFit and group fitness classes, but is the up-and-down exercise really worth all the effort? “The ...

The box jump is a fun and dynamic exercise to add to any routine focused on improving power and lower-body strength. As a personal trainer, I love to include box jumps in my clients’ programming to ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. No, smaller. Find a ...