I too work 5 days of mids. Personally, i try to reset myself on the weekends. When I get off friday morning, I'll take a little nap, usually till noon, and then go to bed at around 11pm. I work my p/t firefighter shifts saturday eves and sunday days, so i'll take a nap before i go back into work sunday at 11pm.
Some people can reset themselves like this, others, like my GF, cannot. It all depends on you.