I realize this isn't a fitness sub. I'm still going to ask.

I work 10 hours Monday through Friday 7pm-5am. And starting next week, I'll be taking classes from 8 am-1pm. After grooming, eating, taking care of my dog, etc. the longest I'll be able to sleep at once will be 5 hours.

I've recently started lifting (my goal is strength) How much is the lack of sleep going to set me back?