Not able to read without paying, unfortunately!

What I was able to read and the title itself has always interested me, as someone who drinks a lot of coffee to get through the day efficiently. I can easily correlate coffee intake with quality of sleep, and it does worry me.

So far I've felt OK about sacrificing weekday sleep quality by making up deep sleep on the weekends. Not sure if the article talks about this or not, but it helps me.. "sleep at night" so to speak :-)