critically analyse ways in which the media can both influence public opinions of sport personalities in both a negative and positive way​

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

Death by starvation.