How can culture be bad for your health

example and key facts  : islam

muslims have to fast at times and can only eat after sunset and sunrise

this might be a severe change in most people for their body because

1. most people wake up at 6:30 - 7:00 they now hv to wake up at around 5:00 before sunrise and sleep a bit late because they will be energised only at night and early morning . they cannot even drink water .

2. their eating habits will change , they will have acidity and will be drowsy the whole day .

i have no clue xdxdxdxdxdxd