When kids are first born they need to eat every 2-3 hours including night-time. And a feeding can take anywhere from 15-45 minutes, with a diaper change per-feeding. If you're in the boat that Jeff or I were in you were very fortunate if your twins were both on the same schedule -- offset schedule twins are exhausting and relentless.
Oh, and 50% of twin births are C-sections and my wife was no exception. So her only jobs for the first six weeks were to recover, breastfeed, pump breast milk, eat, and sleep. Daddy took 6 weeks off work (3 unpaid) and pretty much had to do everything else until my wife recovered from her major abdominal surgery.
Not asking for pity or sympathy. I'm just saying that I don't know how people handle newborn twins without help from friends and family. It would be impossible.