If you ever have problems with headaches that correlate with something hydration-related like napping or drinking coffee, make sure to drink more water. Dehydration is a common cause of headaches.
Drinking more water is like turning off a computer and turning it back on again. Using the bathroom more could mean your body needed to drink more water all along; it does not necessarily indicate that you drank too much water.
If you ever have problems with headaches that correlate with something hydration-related like napping or drinking coffee, make sure to drink more water. Dehydration is a common cause of headaches.
Drinking more water is like turning off a computer and turning it back on again. Using the bathroom more could mean your body needed to drink more water all along; it does not necessarily indicate that you drank too much water.