I don't recommend starving specially if you are planning on jumping, you just will end up with a complete lack of energy and make yourself go through some unnecessary pain. I recently tried starving again, and if any it might stop you from being able get up, walking will be extremely painful and the last time I tried, I had to use an office chair as a wheelchair to prepare some food and stop the suffering. Anyway if you want to stop eating after reading this for any reason, water will be your best friend :)