How Many Calories Does Thinking Burn ?

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Offline neilep

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How Many Calories Does Thinking Burn ?
« on: 01/12/2008 02:50:07 »
Dearest Thinkologists, Cogito ergo sum and fans of Descartes,


As a sheepy I of course am an established thinker, I sit there, reading Hustler , whilst pushing a dog egg out and thinking how big a splash I can make if I follow through with ebullient zest !..Oh Iím a stinker thinker alright !


Look, hereís a brain doing some thinking

[attachment=5486]


Nice eh  ? Being delivered and installed into a creation of mine atop a high mountain during a thunderstorm next Tuesday !


So, thinking burns calories eh ?...Thatís nice.

How many calories does thinking burn ?..does it depend o the subject matter ?...does it depend on how hard I am thinking ?..what about  dreaming ?...does dreaming burn calories ?


Put your thinking caps on will ya and help me out, Iíd ask my neighbour but he still has his head up a cows arse !...Hmm..I wonder what heís thinking about !



Hugs and shmishes



Mwah mwah mwah


Neil
I question, therefore I do not know
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Men are the same as women, just inside out !

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Offline RD

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How Many Calories Does Thinking Burn ?
« Reply #1 on: 01/12/2008 03:15:47 »
The consensus is that the human brain uses energy at a rate of 20 Watts.

Energy consumption of 20 Watts is 20 Joules per second.

A Kilocalorie = Calorie = 4184 Joules.

So a human brain uses a (Kilo)Calorie of energy in about 3.5 minutes.
« Last Edit: 01/12/2008 03:19:24 by RD »

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Offline Chemistry4me

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How Many Calories Does Thinking Burn ?
« Reply #2 on: 01/12/2008 07:09:21 »
20 Watts!! Is that on cruise mode or at its maximum capacity?

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Offline RD

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How Many Calories Does Thinking Burn ?
« Reply #3 on: 01/12/2008 07:53:21 »
20 Watts!! Is that on cruise mode or at its maximum capacity?

Yes we are all as bright a 20 Watt bulb.  [:)]

Not much difference in energy consumption between housekeeping (e.g. when asleep) and active (e.g. performing a task)...

Quote
Brain Signal Persists Even in Dreamless Sleep        02.10.2008

Neuroscientists at Washington University School of Medicine in St. Louis have taken one of the first direct looks at one of the human brain's most fundamental "foundations": a brain signal that never switches off and may support many cognitive functions...

"The brain consumes a tremendous amount of the body's energy resourcesóit's only 2 percent of body weight, but it uses about 20 percent of the energy we take in," says Raichle. "When we started to ask where all those resources were being spent, we found that the goal-oriented tasks we had studied previously only accounted for a tiny portion of that energy budget. The rest appears to go into activities and processes that maintain a state of readiness in the brain."
http://www.innovations-report.com/html/reports/medicine_health/brain_signal_persists_dreamless_sleep_119473.html
« Last Edit: 01/12/2008 08:14:12 by RD »

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Offline neilep

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How Many Calories Does Thinking Burn ?
« Reply #4 on: 01/12/2008 12:21:53 »
Thank ewe very much RD for this great information...20 calories eh ?

That's not so bad, so whilst I have been asking the question about the calorific usage of the brain I have in fact been burning more fat !...great !

Men are the same as women, just inside out !

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Offline Don_1

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How Many Calories Does Thinking Burn ?
« Reply #5 on: 01/12/2008 16:10:14 »
That's got me thinking.........OUCH! That hurts.

If I stick a 20 watt bulb in my left ear, will it light up?
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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lyner

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How Many Calories Does Thinking Burn ?
« Reply #6 on: 01/12/2008 17:23:37 »
A Mars Bar would let you do an awful lot of thinking then.
..... Thinking about the next one, perhaps?

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Offline Don_1

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How Many Calories Does Thinking Burn ?
« Reply #7 on: 01/12/2008 17:45:21 »
So I stick a Mars bar in my left ear and that will light up, right?
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline Chemistry4me

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How Many Calories Does Thinking Burn ?
« Reply #8 on: 01/12/2008 22:08:23 »
I was just wondering if you could EVER stop thinking? When I try to do it I always notice myself holding my breath, maybe my brain stopped thinking for a second and turned many/every thing(s) off. You should try and stop thinking. Not that it probably helps burn many calories...

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lyner

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How Many Calories Does Thinking Burn ?
« Reply #9 on: 01/12/2008 22:40:41 »
I think the best you can do is to think about stopping thinking.

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Offline Madidus_Scientia

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How Many Calories Does Thinking Burn ?
« Reply #10 on: 02/12/2008 10:14:11 »
I wonder how they measured it?

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Offline RD

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« Reply #11 on: 02/12/2008 12:02:58 »
I wonder how they measured it?

Blood flow...

Quote
The brain makes up 2% of a person's weight. Despite this, even at rest, the brain consumes 20% of the body's energy. The brain consumes energy at 10 times the rate of the rest of the body per gram of tissue. The average power consumption of a typical adult is 100 Watts and the brain consumes 20% of this making the power of the brain 20 W.
http://hypertextbook.com/facts/2001/JacquelineLing.shtml

The total energy consumption (~100W) can be calculated by measuring the composition and volume of gases exhaled,
 (using a respirometer).

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Offline Karen W.

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How Many Calories Does Thinking Burn ?
« Reply #12 on: 03/12/2008 08:12:38 »
I was just wondering if you could EVER stop thinking? When I try to do it I always notice myself holding my breath, maybe my brain stopped thinking for a second and turned many/every thing(s) off. You should try and stop thinking. Not that it probably helps burn many calories...
Sorry But if you are consciously TRYING to stop thinking then you are thinking EH???Because Trying in and of itself is thinking!

 Me think its about impossible to stop thinking unless you are brain dead?  Just my opinion.. oh you can concentrate on white walls etc etc meditating is thinking also so as I see it and perhaps you found out it is basically impossible!
« Last Edit: 03/12/2008 08:14:27 by Karen W. »

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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lyner

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How Many Calories Does Thinking Burn ?
« Reply #13 on: 03/12/2008 09:18:22 »
It's like staying awake in order to spot the instant when you drop off to sleep.

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Offline Don_1

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How Many Calories Does Thinking Burn ?
« Reply #14 on: 03/12/2008 09:51:16 »

 Me think its about impossible to stop thinking unless you are brain dead? 

I resemble that remark!
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline Karen W.

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How Many Calories Does Thinking Burn ?
« Reply #15 on: 03/12/2008 10:04:46 »
It's like staying awake in order to spot the instant when you drop off to sleep.

LOL Exactly! LOL...

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline Karen W.

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How Many Calories Does Thinking Burn ?
« Reply #16 on: 03/12/2008 10:07:12 »

 Me think its about impossible to stop thinking unless you are brain dead? 

I resemble that remark!

How do you resemble it? I do suppose it was a very sensible remark really..so Are you a sensible looking guy?  Why don't you post a picture for me to see what you mean??? LOL HEE HEE HEE...

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline Don_1

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How Many Calories Does Thinking Burn ?
« Reply #17 on: 03/12/2008 11:10:03 »
Here you are Karen.......

The Numbskulls from The Beezer comic
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline Karen W.

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How Many Calories Does Thinking Burn ?
« Reply #18 on: 03/12/2008 11:58:32 »
LOL...LOL... very funny.. thanks for the chuckles...

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline neilep

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How Many Calories Does Thinking Burn ?
« Reply #19 on: 03/12/2008 14:26:14 »
That's got me thinking.........OUCH! That hurts.

If I stick a 20 watt bulb in my left ear, will it light up?

Why yes, yes it will !!
Men are the same as women, just inside out !

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Offline neilep

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How Many Calories Does Thinking Burn ?
« Reply #20 on: 03/12/2008 14:26:58 »
So I stick a Mars bar in my left ear and that will light up, right?

Why yes, yes it will !!
Men are the same as women, just inside out !

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Offline dentstudent

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How Many Calories Does Thinking Burn ?
« Reply #21 on: 03/12/2008 14:27:32 »
That's got me thinking.........OUCH! That hurts.

If I stick a 20 watt bulb in my left ear, will it light up?

Why yes, yes it will !!

Blimey, with that and a fish up your bum, you've got pretty much all options covered....

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Offline neilep

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How Many Calories Does Thinking Burn ?
« Reply #22 on: 03/12/2008 14:28:37 »
I was just wondering if you could EVER stop thinking? When I try to do it I always notice myself holding my breath, maybe my brain stopped thinking for a second and turned many/every thing(s) off. You should try and stop thinking. Not that it probably helps burn many calories...

If ewe do stop thinking , what then kick starts the ' start thinking ' ?
Men are the same as women, just inside out !

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Offline neilep

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How Many Calories Does Thinking Burn ?
« Reply #23 on: 03/12/2008 14:29:31 »
That's got me thinking.........OUCH! That hurts.

If I stick a 20 watt bulb in my left ear, will it light up?

Why yes, yes it will !!



Blimey, with that and a fish up your bum, you've got pretty much all options covered....

Why yes, yes I have !  [;D]
Men are the same as women, just inside out !

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Offline Don_1

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How Many Calories Does Thinking Burn ?
« Reply #24 on: 04/12/2008 08:12:01 »

If ewe do stop thinking , what then kick starts the ' start thinking ' ?

The Mars bar in your ear and the goldfish up your bum.
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline Don_1

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« Reply #25 on: 04/12/2008 08:15:59 »
The brain is always active, so you cannot stop yourself from thinking. When you are doing something, it is thinking about what you are doing and what you are going to do next. When you are doing nothing, it is thinking of what to do or just day dreaming and when asleep, it gets the chance to run riot with thinking about what IT wants to think about.
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline chris

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« Reply #26 on: 04/12/2008 08:51:56 »
The brain accounts for about 20-25% of the energy burned in the body (less if your initials are GW and your surname begins with a B). This means the brain runs at about 35W.

Thinking does not significantly increase brain energy consumption but it does lead to a redistribution of energy use within the brain whereby the region of the brain responsible for handling the task being undertaken increases its activity (increasing energy consumption) whilst other (now less active) regions reduce their activity and hence energy expenditure.

Chris
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Offline Madidus_Scientia

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How Many Calories Does Thinking Burn ?
« Reply #27 on: 04/12/2008 08:58:48 »
Is this why high stress can cause health problems? The person is always thinking hard about something so energy is distributed to the area of the brain that this uses for too long, depriving other areas?