I believe it. Add young kids, stress, etc you not getting much quality sleep.
Literally one of the reasons I'm having second thoughts about being a parent. In this day and age I think the only way I could pull it off well is if me and my spouse both work part time.
You wake up early, try to get your kids to wake up early, drive them to school if they don't have a bus, then you have to drive to the office. Rush your work so you can try to get home at a reasonable hour. God help you if you get a call from the school.
You have to then spend time in traffic, time making sure your kids do their homework or get to their extra curricular activities, then you have to make sure they eat and clean up, then you have to prompt them to go to sleep and make sure they're not trying to stay up. By the time its all said and done you've spent maybe 2 hours total doing anything you might want to or something just for you.
I work a 9-5 and I'm drained when I get home. Can't imagine how single or divorced parents do this shyt. Even with a partner the shyt is still hard if you can't get jobs where yall aren't working at the same times and days.