Drink water with electrolytes during fasting, e.g. a little bit of salt. If you drink just normal water, it's hypotonic and you'll lose electrolytes, bringing y

Drink water with electrolytes during fasting, e.g. a little bit of salt. If you drink just normal water, it's hypotonic and you'll lose electrolytes, bringing you to a hangover-like state - that might be brutal then.