I'd almost say high concept books pair better with blue collar work. I'm mentally exhausted after a day of meetings or programming, but if I'm doing manual labor I end up physically exhausted, not mentally exhausted
An age old wisdom - if you work manually, rest via mental efforts, and vice versa. For most HNers it means do tons of sweat inducing efforts, often, so mind can rest a bit and do some defragmentation, not leaving everything only for sleep.
