0_Apprentice
I have quite a lot of energy, but I know some people just aren't as lucky. Is their a medical condition for being constantly tired?
1_Wizard
I think it's called Chronic Fatigue Syndrom, or CFS.  I don't know a lot about it, but it makes people tired for long-term amounts of time.
0_Apprentice
That must be awful. I wonder what causes it. Depression perhaps?
1_Wizard
I don't think the cause is fully understood.  It could be genetic, could be biological, or it could be psychological.
0_Apprentice
Well, I guess the medical profession had better get to the bottom of it. It must be destroying people's lives!
1_Wizard
I'm sure it is, but people are starting to see that behavioral therapy and a slow increase in activity can help counteract the effects.
0_Apprentice
That makes sense. If a person exercises it often brings ones energy levels up.
1_Wizard
That seems to be the case.  It also looks like evidence has shown that there's no adverse effects from trying to counteract the effects of CFS, which is good.
0_Apprentice
That is good. A healthy diet, positive thinking and exercise are things we all need. Perhaps that's what's needed.