Introduction Most people think dehydration only happens when you feel thirsty. In reality, chronic dehydration develops slowly and quietly, damaging your energy, digestion, skin, and even brain health. Many people live dehydrated every day without realizing it. Let’s uncover the warning signs your body uses to ask for water — before serious health problems appear. 1. Constant Fatigue When your body lacks water, blood volume drops, forcing your heart to work harder. This results in persistent tiredness, even after proper sleep. 2. Frequent Headaches Dehydration causes the brain to temporarily shrink away from the skull, triggering headaches and migraines. 3.…