What's the Best Workout for Gaining Some Weight?

We talk a lot about weight loss, but sometimes forget that there are people for whom gaining weight is an actual challenge. If you've got experience with putting on a bit of muscle, or even just working out without an eye toward weight loss, jump in and help out a fellow reader! Skeleton Joe writes: When discussing exercise, it always seems like people focus on weight loss. I'm on the other end of the spectrum. I'm a fairly underweight person. I'd really like an exercise regimen that'll help me build some muscle. The reason I avoid going to the gym is I just don't know where or how to start or if I can do what I need to without springing for a gym membership. Have some advice for Skeleton Joe? Post it below!