I often turn to Creative Generalist for good links. I particularly like this one on the the value of ‘slack’ for creative thinking and how the long hours culture in the US may be counter productive. (Something that is being echoed here in the UK) As the arfticle says:
“But it’s really, really hard, if not impossible, for the human brain to come up with fresh new ideas when its owner is overworked, overtired, and stressed out. And in today’s wonderful world of nonstop work, 40% of American adults get less than seven hours of sleep on weeknights.
“The physiological effects of tiredness are well-known. You can turn a smart person into an idiot just by overworking him,” notes Peter Capelli, a professor of management at Wharton.”