For the last year or so I've been doing 100-200 push-ups

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For the last year or so I've been doing 100-200 push-ups of these kind weekly in one day (mostly in weekends) as a routine.

I've been doing this so I can let the muscle repair itself and so I could feel the muscle fever.

Because of some personal issues, I couldn't continue this routine for a month but the last week I've done 30 in one round and that was my limit at that point.

The thing is that after 5-6 days, I still feel a horrible fever after those 30 push-ups.

My question is and tl;dr : is muscle fever = gainz ? Can I get them even if i'm not feeling it ?