Sometimes when I push myself too hard I find that I become incapable of resting. Even if I’m very tired I can’t sleep properly because I keep having these “loop

Sometimes when I push myself too hard I find that I become incapable of resting. Even if I’m very tired I can’t sleep properly because I keep having these “loops”, such that the moment I would fall asleep my whole body jolts and I’m thrown back to this half-asleep state, and this keeps repeating seemingly for hours.