Gain a Pound of Muscle Every Week

Maybe you've had sand kicked in your face. Maybe you've lost one too many attainable women to beefier guys. Or maybe you've read so much about weight loss that actually admitting you want to gain weight is a societal taboo. Whatever the reason, you want to bulk up. Now.

But forget about your alleged high-revving metabolism, says Doug Kalman, R.D., director of nutrition at Miami Research Associates. "Most lean men who can't gain muscle weight are simply eating and exercising the wrong way," he says.

Here's your fix: Follow these 10 principles to pack on as much as a pound of muscle each week.