When you're awake? 'cause people who have sleep apnea don't usually have any trouble breathing whatsoever either. Use your phone to record a nights sleep, or at least SOME sleep, and you might hear: snoring, no breathing, sudden panicked gasping for breath, all without waking up. Or hopefully, just the snoring. Also, you were great in Sin City. :)

You can be completely fine while awake, but still have apnoea while asleep. If you are sleeping that much and not feeling refreshed, it definitely seems like something to get checked.

When i'm awake i don't either. But when asleep it turned out i was sometimes not breathing for up to a whole minute.