Yes extremely.
I could cum 4 times with 2 hours, my record was cumming 7 times within a night and 4 times per day continuous for 4 straight days/nights (some of my personal best records)
i share all these without any hint of boastfulness, just sharing and i know some people with better records.
...after i hit 30 it started to plateau and around 35 it started going downhill all the way. i would be lucky/happy if i can cum twice within a session now.
All your liquid got used up when you are younger. Leaving nothing left now.