How CEOs work 100 hour weeks without crumbling

This seems to be arguing on both sides of the aisle:

- CEOs do these things right for allocating their mental energy and physical health, and therefore are bursting with energy and happy, but also

- CEOs aren't necessarily happy and they aren't working 100 hours all the time despite their energy levels indicating that.

Maybe the duality is the point, but then I don't think the title is accurate.

Mine seems to put in at least 4 hours a week from what I can tell