List of things I do on a daily basis because of OCD:

Nail biting until sever pain/bleeding

chewing skin around nails

chewing on finger nails after biting them off

cutting toe nails to the point of bleeding,

Chewing on plastics

chewing on duct tape and other random things that are tougher

chewing stuff long enough that my jaw shifted and cut into my ear drum (think this cut into nerve, resulting in my long lasting hiccups) Changed which side of jaw I chewed stuff on in order to avoid the pain in ear drum, which was an awful back and forth cycle between ear drums. Urge to chew obviously took the wheel

biting out facial hair

biting off lining of inner mouth

scab picking until scaring occurs

can't wear clothes without getting every folded bit completely flush with my skin, boxers lines up with waist of pants, etc. Constantly adjusting clothing so things are comfortable throughout the day. If it isn't comfortable to me it will literally drive me crazy

have to cross my toes and press down on them or I start freaking out. Strengthens at night and makes it impossible to sleep

have to adjust how my clothing or skin is touching whatever surface I sleep on until whatever arbitrary definition of comfortable if fulfilled, which never happens.

These last two things make it impossible to fall asleep until I am actually physically exhausted.

there are so many more tiny things that I can't even begin to list, especially obsessive thoughts. These are just the main ones that I've had since elementary school and beyond which have a physical effect on my life.