Not as many as I used to be able to do. I worked third shift thru college. I worked 30 minutes from home but an hour away from campus. Plus I had the guard and rotc. I worked 6 on , 2 off on rotation. I had class 5 days a week. So I'd work 10p to 6a, drive to ROtC immediately after work, that lasted from 7a-9a, I'd sleep for 2 hours, class at 11:30 to 2. Another class from 330 to 6. Slept an hour if I could between classes in the back seat of my truck. Then drove home after class, ate supper and got ready for work. Did that for 2 straight years, I will never do that again. Ever