A man is generally meant to till the land and eat from sweat, but the notion to rest as our creator rested on the seventh day is a peak advice for optimum performance in any area of life and career endeavor.
Rest, take naps, take power naps as ways to remain sharp, maintain a healthy heart and in turn, health, as well as complete more task and come up with better ideas.
Most geniuses that existed before our generation was born like Albert Einstein, was known to rest a lot. Since rest doesn't necessarily mean to sleep and have dreams, by simply playing the violin during rest periods, our boy genius, Albert remained as sharp and came up with principles that have led to ground breaking inventions and innovation today.
Health is wealth, please always remember that when you encounter choke points where thinking is impossible. Know it's time to rest, afterall, if we die while overworking, we get replaced and life goes on, and if there were any dependants, they simply suffer due to the negligence of rest while working to make for them a better life.
That's the lyrics mate, take some breaks to rest when you've felt that exhausted ness so that you can be able to structure with new and better ideals with the potentials to bring a more better outcome. Humans ain't robots so let's always understand that the necessity to rest is regenerating energies for a new or further episodes of life.