is it normal to gain weight if I have a high metabolism?

Question

I never started to gain weight till im 21 I went from 100 to 105 in less then a week.

Answer 1

yes. a high metabolism doesn't mean you'll never gain weight. it just means you have to eat more to gain weight :) and those 5 pounds are most likely water weight, unless you really did eat 17500 extra calories in a week.

Answer 2

Of course it is normal, but since you have high metabolism, you probably are going to lose that weight quickly as well. So cheer up =>.
Another thing, did you have your period that week?? because if you did, normally a woman gains 5 to 6 lbs when she has her period, and drop that extra weight right after her period is finished.

Answer 3

Have you considered the fact that in all likelihood you did put those lbs on because of all the food you might have eaten around Christmas?