Push-ups always came easy to me. In my 20s and 30s, I could crank out more than 30 a day if I wanted to, and I loved how strong they made me feel. But the other day, when I went to do a set of 10 push ...

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 ...