Drink water. Dehydration is the cause. And finally, you are too old to still be drinking. It disturbs your sleep and is an understated source of excessive caloric intake.
Gatorade works the best. Use it to wash down those Advils. Then take a nice long walk.
“And finally, you are too old to still be drinking.”
Damn, how old do you think I am?
(Old enough to know better, I suppose. . . )