Next Step in understanding the importance of sleep - what are the implications for our work-life balance?

http://www.globaltimes.cn/content/818619.shtml#.UmOghC9wawk 

Chemically processing food in our stomachs creates free radicals which are a poison to the brain, damaging cells and depleting BDNF (Brain derived neurotrophic factor) essential for Neurogenesis.

It has been understood for some time that oxygen collects these Free Radicals, converts them to CO2 & transports them back to the lungs (through the blood stream) so we can breathe them out and save our brains from toxic deterioration...
Now it seems the brain lends a helping hand while we sleep.

(See article on link above).

Doesn't it make you wonder why we push ourselves to work until the early hours of the morning to keep up with a stressful workload?
Or, through the use of targets, which we typically have no part in defining (and thus, no method of 'owning', leading to cognitive dissonance and stress among other disassociation issues) why we create conditions in which we chronically increase the release of stressor hormones, which also have a negative impact on the brain... and why we don't train these things to leaders as part of leadership CPD?

After all, it is the leaders of organisations who can influence a healthy and happy lifestyle for their employees, often more than the employees can influence a better work life balance for themselves... and as the old saying goes 'A happy worker is a productive worker'.

Sometimes I think the popularised approach to leadership just doesn't go deep enough.