Quoting Melissa Gilmore:" Most likely it's dehydration and lack of nutrition. If I'm feeling icky I drink some water and eat some fruit, it usually helps"
Quoting Lillybutt's momma:" Is this a serious question? Of course all the above would cause headaches "
Quoting Rd.:" No offense, but seriously OP? lol... You're body will fall apart if you don't take care of yourself.."