I have a problem, and I've been facing this since senior high. I'm already 24 but my weight is only 105 pounds. I tried to eat a lot, with what my friends have suggested. But i don't see any progress. I also work at night time, where I do events in a foreign organization, so I think this might be the reason why I'm having a hard time gaining at leat enough weight. I need your advice everyone! Please!!.