How many rest days should I take in a week from gym and is the rest days that much important?

ioslkxlsm

I like going to gym everyday even if all my muscles hurt , I just go for cardio. I eat more than enough protein everyday. I became stronger in 3 months but no difference in body. Should I take rest days and how many rest days should I take in a week?

How many rest days should I take in a week from gym and is the rest days that much important?
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