I am thin and do such thing does it affects my weight?
Not at all. Masturbation has no effect on your weight at all, unless it either keeps you from eating or keeps you from exercising – and it would take a lot of masturbating to do that. You are probably thin because your metabolism processes food at a high rate. Feel free to masturbate as much as you like; it won’t cause you to lose weight. (Most men would be skinny as rails if it did!) To keep your penis in extra good shape, make sure you also use a good penis vitamin formula (health professionals recommend Man1 Man Oil). One with vitamin A has the added benefit of fighting unpleasant penis odors.