Yes, it was relaxed but I also wanted to be very focused and in the zone otherwise working was contra producitve (I was/am a poker player so working bad meant loosing money).
I remember a study about the human ability to really focus and how long this was possible and that was shockingly short so I wanted to have more time to recharge, but you right it was very chill ;-)
But I honestly think for a good work/life balance and also to improve efficency of our work, we should not jeapordize our sleep. I tried to avoid the blue light for an hour before going to bed but that was harder than I thought :-) and eventually just gave up and started using f.lux