very common. Especially with the lack of sleep it will be worse. You will get over it. Don't let dark eyes get you down. Hey just be thankful that's all you're asking about Good luck.
Make sure to stay hydrated and get as much sun and exercise as you can. It will help your body in repairing itself.
Quotes that keep me going:
"Do you have another day 1 in you?"
"If not now, when?"
“When a train goes through a tunnel and it gets dark, you don't throw away the ticket and jump off. You sit still and trust the engineer.”
Clean as of 02.03.2012