I think it would be interesting to compare how much support various elite athletes had after they gave birth. An uncomplicated pregnancy and delivery can be recovered from fairly quickly, but it's raising an infant that can be pretty killer.
If an athlete had a family member or nanny that was helping out a lot (especially with nighttime feedings!), it's less impressive to me than if you had an athlete who breastfed the first year, did the nighttime feedings, and had to take the baby everywhere with them. It's certainly doable, and I am sure many of these athletes did!
We all know sleep is an important part of recovery. What happens when an athlete does not get more than 4 hours of sleep in a row for a year? Maybe that's just my life, good thing I am not an athlete