I just read Matthew Walkers book - Why We Sleep. It is probably a major factor in the changes. Just watch the first few minutes of this. https://www.ted.com/t

I just read Matthew Walkers book - Why We Sleep. It is probably a major factor in the changes. Just watch the first few minutes of this. https://www.ted.com/talks/matt_walker_sleep_is_your_superpower/transcript https://www.ted.com/talks/matt_walker_sleep_is_your_superpow...