How do i gain weight faster?

[mavrevv]

I feel like im too skinny i am 171cm 55kg 15 yo and want to gain weight as my wrist is way too small and i feel like many other people my age could overpower me

 

[jefferychudster]

dont rush weight gain and end up like a fat fuck, track ur calories, find ur bmr, and eat in a 10-15% surplus