I had heart palpitations randomly for over 8 months after Covid. I still find that my extremities tend to go to sleep and start tingling regardless of what I do (even them hanging by my side). It's extremely noticeable when I wake up from sleep. Even sleeping on my back with hands to the sides all night wakes up with them completely asleep and tingling, and other parts of the body seem to go to sleep easier than they did pre-Covid.
Thankfully, even though I likely had an early variant(Dec 2020), mine was not very extreme. I was constantly cold (like 45 minutes hot showers to get warm) and lost taste/smell, but I felt decent enough to run a 5k with it (probably stupidly, but at least it warmed me up), but the after effects have got me worried, especially the tingling in extremities which doesn't show any sign of going away.