if you have a headache, drink water, a headache is caused by the body actually sucking water from the brain. basically it means your body is dehydrated. 8 glasses a day fixes that.
if you drool while you sleep, it means you need more salt in your diet.
water also helps with heartburn, reflux ect.
put honey over minor burns, it stops the sting.
fasting detoxes the body of all rubbish, cleans away dead cells, and heals yr body,
drinking freshy squeezed lemon juice with water also helps with toxins in the body.