The therapist of a PhD candidate said that they have to take brain breaks. They did and took them well.
It was weekends flying to a beach and not getting into a car again until leaving again. It was days lying on the beach. It was nights of good food and early to bed.
The focus this human could wield at will was wild.
The quality of rest they allowed themself made that so: It is how we rest that determines how we can go.