Reading the news of the day can leave you feeling as if life is pretty heavy, and between careers and kids, we have plenty of baggage to carry. But even the heaviest of burdens is nothing a strong set of shoulders can’t manage. Strengthening the upper body means working on four major areas: chest, back, shoulders and arms. These quadrants are intertwined so most exercises do double duty by engaging multiple body parts. Understand how you can carry the weight of the world with this intel...