Strange Causes of Headaches That Have Nothing to Do With Dehydration

23. Weekend "Let-Down" Headaches

Do headaches consistently ruin your Saturday mornings? You might be experiencing a "let-down" headache. After a stressful work week, the sudden drop in stress hormones like cortisol during relaxation can trigger a headache or migraine. Changes in routine, like sleeping in later or altering caffeine intake on weekends, can also contribute. To combat this, try maintaining a consistent sleep schedule even on weekends, managing stress proactively during the week, and keeping caffeine habits steady. Gradual relaxation might be key.

24. Getting Overheated

While dehydration often accompanies heat, overheating itself can trigger headaches. When your body temperature rises significantly—whether from intense exercise, hot weather, or a stuffy room—blood vessels in your head can dilate to help release heat. This vasodilation can lead to a throbbing headache for some individuals. Staying cool by using fans, wearing light clothing, seeking shade, applying cool compresses to your neck or forehead, and avoiding strenuous activity during peak heat can help prevent these heat-induced headaches.