system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:What is the tingling sensation that I feel when the blood rushes back to a body part that has fallen asleep?

Edit: 
TLDR: Alright! So from what I have gathered from the brilliant minds below is that this sensation can be caused by nerve disruption or lack of oxygen provided to the nerves because of insufficient blood flow. When the pressure is relieved or blood starts flowing again the nerves begin working as intended and begin sensing/ tingling all over as they reestablish equilibrium and unhindered contact with the brain!

If I fucked up the recap message me! Otherwise, thank you guys very much, the responses were great and I enjoyed reading through them. :)
gpt
That's not blood rushing back, because limbs don't fall asleep by having their blood supply cut off.  It's caused by pressure on a nerve cutting off communication between that body part and your brain.

The tingling sensation is the nerve starting to re-establish equilibrium after the pressure is removed, which causes it to send lots of wonky signals to the brain for a bit until the electric potentials in the nerves settle down.