The back isn't just the largest muscle group in the upper body; it's also a real calorie-burning machine. The stronger and more active your back is, the more calories you'll burn throughout the day!

I love the feeling after I do an upper-body session at the gym, but it's dedicating the time to it that I struggle with. Plus, just to add another excuse to the bank, I'm not long out of marathon ...

WANT TO BUILD your biggest upper body muscles without spending so much time in the gym that you'll owe them rent money? You'll need to learn how to train efficiently, rather than just showing up and ...