Hi,
Welcome to the AYP support forum[
]
I've noticed that when I sleep without adequate ventilation, I sometimes wake up racked with vibrations in my body from lack of oxygen. I put a fan near my bed and moved my bed near an opened window, and the situation improved. When I sleep outside in the open air, that is the most comfortable. Some Yoga is kind of like sleep - if we don't get enough air, it can stimulate bodily vibrations.
I suggest better ventilation, perhaps a fan.
Namaste,
Bewell