Since I don't have an urban dictionary account, and can't define it there, I'll define my word here.

Digital Hangover:
When you spend too much time slouching over your computer, then wake up the next morning feeling awful. It usually happened in the summertime, or, occasionally, on the weekend
Includes: back pain, neck pain, a headache, hurting eyes, and tiredness.

I would recommend getting some sleep and taking a break from your technology afterwards.