Sorry if that headline's a bit crude for you, but Kiefer Sutherland claims that they have filmed scenes of him doing all three at least once (not at the same time):
Sutherland insists that, despite appearance, Jack Bauer does take time out of his busy day to do the things everyone else does during the course of a day.Respectfully, I would point out to Kiefer that if we don't see it, it didn't happen. Filmed or not, if the producers cut the scene, there are no bathroom breaks.
"In every year, I have eaten at least once and (the producers) cut it out. I even used the bathroom once. And they cut that out. And I've fallen asleep, too, in every scene. I've been sitting in a surveillance car and fallen asleep. They cut that out. You really need to take that up with the producers. We've tried."
Still, it's interesting to know that the writers understand the issues they create by ignoring such issues—it's the producers who don't seem to care.