When I get a lack of sleep (or especially multiple nights of bad sleep), I often have a splitting headache the next day that makes me unfunctional and worsens until I get more sleep. Other people I’m with have the exact same sleeping routines and never get any headaches, and can still function despite being tired. What’s wrong with me?
People that don’t get enough sleep still suffer from it, they just might not be getting headaches.
Keep yourself hydrated and get more sleep. Take care of yourself.