What do you do in youre sleep?

have you had partners that comment about what your sleeping body does?

I've been dealing with this for over a year with my boyfriend, Google says it means hes healthy.

but he is hard, all night. sometimes it flexs. sometimes he moves into air or me.

this is a nightly thing. do you guys do similar things that you know of? I genuinely worry about it, all the blood for many hours yk

Edit- to fix the titles that merged in my brain.

What do you do in your sleep.
What do you do while you're sleeping.