I know there are one or two threads here about generally gaining weight but could do with a little more specific help. I'm 24 years old 6'2'' and weigh 69kgs. My bmi is 20. Which is classed as normal. I've always been pretty slim and have ofund it hard to gain weight. I dont have gym membership but do tae kwon do at least twice a week. I am trying to bulk up. Can anyone suggest the best way to do this. Can anyone suggest any specific exercises that i can do using weights at home? I don't know of any exercises I can do to increase Ab size? Help appreciated.