Ive been doing jujitsu pretty consistently for about 4 years. Mostly no gi (just shorts and a rash guard as apposed to the silly karate jacket).
I have not improved in the last year or two lol. And i think its because i got bigger. Im about 30lbs heavier that i was a year and a half ago. Most of which i beleive is quality tissue, not that im so great or aesthetic. I used to be able to fight 5-7 minute sessions over and over. Now i do a couple of drills and im seeing stars! I think ive also lost flexibility. I couple of the guys at the school told me they were weight lifters and had to slim down to improve on their jujitsu game. Which leaves me with 2 things;

Fuck my jujitsu ability, I’ll never stop trying to grow. Its worth getting choked out during the classes. Atleast I’ll sort of look tough.

Has anyone else ran into this issue in mma/jujitsu/kickboxing etc? Being bigger and stronger apparently is not the answer in competitive fighting. Not to mention my weight class puts me with guys a foot taller than me.