I've had a couple problems with cutting off circulation with my controllers and trackers, then falling asleep in VR. The entirety of my circulation doesn't get cut off, but the pressure on my hands or feet definitely constrict blood flow to some extent.

First time I had this issue, I fell asleep in VR, I woke up and my hand had a bit of a numb feeling. Not completely, but the way I slept on it reduced circulation to parts of my hand. I could feel a stinging when I applied pressure to my hand which has since gone away.

The second time was yesterday. My foot strap was on a little tight, even though I did put it on somewhat loose, and I removed it several hours later. I checked and it felt strange, even though I could still feel it and move it just fine. I massaged the foot to help it, and ever since it has a weird sensation, similar to how your foot feels when you have the "pins and needles" feeling and sensation returns. Except, this is somewhat of a constant feeling.

Anyone know how serious this sort of thing is? I figure it's not really the same as bruising, but you could be harming tissue by applying to much pressure. I'm surprised, because I've had tight shoes that never caused this sort of problem.