‘”When things only got worse the next day, I spoke with [then-Sabres coach Dan Bylsma] and made the decision to sit that one out. I thought some rest and time off would do the trick. But even then, things didn’t improve. I went to the hospital hoping that they could find a way for me to get some sleep.’
Okposo ready for season with Sabres after recovering from concussion
Source: NHL.com