How the heck can people work like that for 8 hours? I start to get very worn out at 2 hours of conversation.
I've paired on a couple projects and miss it. The exhaustion is very real but pairing really works when you take breaks. When one is loosing focus, there isn't a hesitation to say let's take a break. I found it similar to taking a timeout in basketball. As an engineering manager I stressed it to the team. Take breaks or you will break.
Life is waaaaayyy to short for that shit. Work so hard you are in danger of injuring yourself. No thanks.