~ "Coffee naps are better than coffee or naps alone" ~

`How a coffee nap works`

`To understand a coffee nap, you have to understand how caffeine affects you. After it's absorbed through your small intestine and passes into your bloodstream, it crosses into your brain. There, it fits into receptors that are normally filled by a similarly-shaped molecule, called adenosine.
Adenosine is a byproduct of brain activity, and when it accumulates at high enough levels, it plugs into these receptors and makes you feel tired. But with the caffeine blocking the receptors, it's unable to do so. As Stephen R. Braun writes in Buzz: the Science and Lore of Alcohol and Caffeine, it's like "putting a block of wood under one of the brain’s primary brake pedals`


But here's the trick of the coffee nap: sleeping naturally clears adenosine from the brain. If you nap for longer than 15 or 20 minutes, your brain is more likely to enter deeper stages of sleepthat take some time to recover from. But shorter naps generally don't lead to this so-called "sleep inertia" — and it takes around 20 minutes for the caffeine to get through your gastrointestinal tract and bloodstream anyway.
`So if you nap for those 20 minutes, you'll reduce your levels of adenosine just in time for the caffeine to kick in. The caffeine will have less adenosine to compete with, and will thereby be even more effective in making you alert.`

MORE:




http://www.vox.com/2014/8/28/6074177/coffee-naps-caffeine-science

 

Lower risks of premature death and heart disease than those who abstain...

Three Coffees a Day Linked to More Health Than Harm: Study
November 23, 2017 — People who drink three to four cups of coffee a day are more likely to see health benefits than harm, experiencing lower risks of premature death and heart disease than those who abstain, scientists said on Wednesday.

 

Perk......Coffee! Mmmmm.

 

Well this O/P has not been around in 3 years.

But the article is still interesting.

 

So where and how did you dig this thread up pray tell ?!

 

My body wakes me up automatically after 1 hour of napping.

Then if I go back to sleep it wakes me again after 2 more hours.

Then when I go to sleep again it wakes me after 4 more hours.

So I generally get 7 hours of sleep per night with 2 wake up calls.

Ergo I don't need coffee to wake after a nap.

I use coffee to wake up early or to stay buzzed through an 18 to 24 hour shift.

Then I usually crash in the usual manner (1 hr, 2 hrs, 4 hrs, etc.) for the next 24 hours of sleep.

 

So where and how did you dig this thread up pray tell ?!

Found it onna VOA web site...

... used Title search to find a thread.