Well, it turns out newaza is an opportunity to rest if you're better than your opponent. Otherwise, it's exhausting to spend three minutes trying to escapea pin. It was worse than standing randori. I got through all of the breakfalls at the beginning of class without being tired and all of the practice throwing, then I hit that wall.
I got thrown with osotogari several times, despite countering a bunch of them. I guess I just have to be very ready to counter. In the forward throw department, I actually threw with uchimata. Kind of amazing.