Same. Did 72.5 hours in a 5.5 day workweek (Saturday was 5 hours) when I was 18. Also had an hour commute to and from the jobsite. We paved (concrete) right around 3 miles of road that week.

Got done bought a set of tires, got home, showered and crashed for about 16 hours. Was awake for a couple hours on Sunday and slept another 12 hours then went back to work Monday morning.