Sometimes after meditation (not kriya yoga), I will get up to stretch my back. Then I feel supremely light-headed and I feel inner sensations all over my body. Is this normal? What is this?
To answer your question better, I’d need to know what sort of meditation techniques you are using (you say "not kriya yoga") and for how long you have been sitting in meditation, when these sensations happen to you.
Some breathing exercises can make you light-headed if not practiced correctly. Or perhaps your posture needs some modification.
If you’d like to talk more about this in detail, contact me directly, and we'll see if we can come up with some personalized solutions for you.