Why do fingers go numb and stay numb after working out I started an exercise that has your hands pointing forward and you lift your body towards the ceiling and hold the pose for 30 sec?

The most likely problem is that the position of you wrists may be putting pressure on the nerves that control feeling in your hands. Try the exercise again but do it with your palms facing you. Or do it with one palm facing you while the other faces away. See if these different positions help.