Max: Living on Two Hours' Sleep

I just looked at next month's schedule. I am scheduled for first shift on Saturday 9/13. I don't know how they expect me to do this on a regular basis given that I work until midnight on Friday. Even if I slept in my cubicle that is still only 7 hours of sleep. Given that I have to drive home, eat, shower and drive back, that leaves me with far less time for sleep. On top of everything else, now I have to ignore basic physical needs in order to keep myself in a shitty job.