Also my health problems

Via Slashdot I read this note about health problems related to the geek lifestyle although I don't consider myself very geek in fact I suffer all this problems. I'm not paranoid, in fact I'm suffering this.
Short list is:

1. Horrible Sleep Hygiene
2. Headaches
3. Back Pain
4. Poor Attention Span

The latest one, as a read in the article, is not a healt problem but I never suffer attention problems and I feel that way, mainly since I try to study in the on line university I found myself such way. I know I note it since I start to study.