If you don’t stay hydrated, your physical performance can suffer.This is particularly important during intense exercise or high heat.
Losing as little as 2% of your body’s water content can significantly impair your physical performance.
Your brain is strongly influenced by your hydration status.Studies show that even mild dehydration, such as the loss of 1–3% of body weight,
can impair many aspects of brain function.Mild dehydration (fluid loss of 1–3%) can impair energy levels, impair mood, and lead to major reductions in memory and brain performance.
Dehydration can trigger headaches and migraine in some individuals, Research has shown that a headache is one of the most common symptoms of dehydration.
Drinking water may help reduce headaches and headache symptoms. However, more high quality research is needed to confirm this potential benefit.
Drinking plenty of water may help prevent and relieve constipation, especially in people who generally don’t drink enough water.
There’s limited evidence that water intake can help prevent recurrence in people who have previously gotten kidney stones
Hangovers are partly caused by dehydration, and drinking water can help reduce some of the main symptoms of hangovers.
Some evidence suggests increasing water intake can promote weight loss by slightly increasing your metabolism, which can increase the number of calories you burn on a daily basis.