As the obesity numbers keep climbing, everyone wants to eat less and to exercise more. This is great if you're able to exercise moderation and common sense
But if you're already sick and your frame of reference is unhealthy to begin with, it's difficult to know when enough is enough.
Just as those with anorexia diet excessively to cover up their faulty body image, some people with sleep breathing problems like upper airway resistance syndrome (UARS), or obstructive sleep apnea (OSA), abuse exercise as a means to cope with the lethargy created by their chronic sleep deprivation.
Addicted to Exercise
A lot of patients I see with UARS and OSA become exercise junkies in the same way that people who don't sleep enough become coffee addicts. Rather than consume substances to give them a "high", these exercise addicts crave the endorphin fix they get while working out to overcome the constant fatigue they feel from not getting the quality sleep they need. Many of them admit that If they miss even one day of working out, they'll get agitated, moody, and sometimes downright catatonic.