I am 24 years old and i am masturbating twice to thrice a day for 7 years. i m very weak and my weight is only 36kg.am i weak because of masturbating?

Masturbation norms: Nope. There is no correlation at all. Now look in the mirror...Do you look like your family members? Do you come from thin stock? Masturbation is a common part of the human experience. Even those men bigger than you probably masturbate frequently. One cannot burn enough calories to make themselves overly thin through sexual activity alone.