how will a thin person gain weight?

not concerning tht topic, but how long does the effect last from the sauna belt? any idea?

i dont think that slim sauna belt works my cousin had brought it, it is not that effective it is effective to some extent only . to get opposite there are some tricks like joing gym and leaving will also, after your education when you get into job also you may become fatter depends on your physical activty what you do.

it just makes you lose some water from your body not fat.... i've tried that and it doesnt work well :/