I was thin, 95-105 lbs, at my early teens.. Then I got active to sports and helped me build muscles and gain weight.. Then at age 18, I lost ten to fifteen pounds so I went back to working out and eating lots of carbo and protein.. I realised gaining weight is harder than losing.. :D I'm fine with my weight and body now though I think I gained too much haha.. :)) My only tip is eat more that what you can burn..

Hello all.
First of all, the best thing you can do to address being too thin, imho, is to see your physician and then perhaps a nutritionist. Also, research tips on healthy eating like superfoods and what is an empty calorie (foods that have very little nutritional value ie:rice.) Another suggestion is perhaps using a meal replacement drink like Ensure in between your meals adding additional calories easily.It is a milkshake like product that's a meal sold at most grocery stores in USA.