The push-up is one of the best upper body exercises there is, and one of my favorites. If you want a strong chest, defined arms, and a stable core, push ups will help you get there. Don’t think of ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. The muscles in your lower ...