We have the same issues.
If you are cooking from scratch, hanging your laundry, and doing all your own maintenance.... Well, then that's what you do after work, not TV.
Plus, kids. Just isn't happening (for us; I am sure some don't mind if the coparent is never around, but I sure do!)
Anyway, I think if H got his exercise via biking to work, and worked a straight 40 hours, it might be possible. But currently, even with a ten minute commute, its close to a ten hour day, plus time to exercise, plus mealtime as a family, plus putting the kids to bed and otherwise spending time with them. And that's with me doing all the cooking, cleaning, laundry, and a lot of the house projects. So, unless you can survive on way less than 8 hours of sleep, you run out of hours in the day.