View Full Version : My math is off, or fatties are dangerous

06-13-2010, 08:05 PM
Correct me if I made an error, because these numbers are insane.

So I decided to see just how much energy is in fat. First I converted pounds to grams, and according to wikipedia 37.8 kilojoules of energy in each gram of fat. Then to put that into perspective, kilojoules to foot-pounds.

As an example I used 40lbs of fat, the result, 685843 kilojoules. Which to put into perspective, is enough energy to lift one ton about 48 miles.

Really puts into perspective what it actually takes to lose weight.

06-13-2010, 08:08 PM
So then all we have to do to reach the speed of light is give all of America lipo!

Just checking the math a bit, but one Calorie is actually one kilocalorie, or 1000 times the energy needed to raise one milliliter (or cubic centimeter) of water 1 degree centigrade. Now there are nine Calories in a gram of fat, so one gram of fat could take one CC from the freezing point all the way to 9000 degrees. Or in other terms, it could raise the temperature of a liter of water 9 degrees.

I'll have to say that IS a scary amount of energy. On the other hand, what's scarier is that our bodies need all that. I thought car engines were inefficient. A 2000-Calorie diet means that we're daily consuming enough energy to raise a liter of water 2000 degrees, assuming no phase change, or a two-liter bottle of water to ten times the boiling point from freezing, or boil roughly 5.28 gallons of water from freezing for my fellow Americans. That's essentially a small kitchen garbage can.

06-13-2010, 11:16 PM
To make a less impressive analogy, I believe an average human uses an amount of energy on par with a 40-watt incandescent light bulb left on constantly. Or 60-watt, I can't remember. Wooo light bulbs!

However yes, fatties are dangerous.

06-13-2010, 11:20 PM
Fatties are dangerous, that's why they have weight classes in martial arts.

06-13-2010, 11:35 PM

I would not want to fight butterbean!

Daimo Mac, The Blue Light of Hope
06-13-2010, 11:39 PM
I am so glad to know I am a dangerous person now =(

06-14-2010, 12:00 AM
I am so glad to know I am a dangerous person now =(

Don't be silly. Fatties aren't people.

Daimo Mac, The Blue Light of Hope
06-14-2010, 12:02 AM
Don't be silly. Fatties aren't people.

*runs off crying*

06-14-2010, 12:13 AM
*runs off crying*

You, run? That's a laugh.

Daimo Mac, The Blue Light of Hope
06-14-2010, 12:17 AM
You, run? That's a laugh.

I am capable of running actually. Not fast.

06-14-2010, 12:47 AM

06-14-2010, 12:49 AM
How much volume does a person have? Let's say 100 liters for simplicity, probably less but we also has less average density than water. And the average body temp is a sustained 37C, which we might call 10 above room temperature. (In a hot room.) It'd take 1000 Kcal to achieve that, and then you've got to keep it up. Seems reasonable to me.

06-14-2010, 12:51 AM
I knew a few fat folks that could outrun my short skinny ass, scared the living hell out of me. A 300 lb man should not be that light on his feet, and if he is he is capable of great and horrible things.

But yeah a lot of power indeed if they can build their bodies to use it efficiently, the prime of the situation is that either they are specializing in a diet that makes them fat while being active or they are working hard at being fat(something I've done before to try to overcome the thin-ness). If they can't convert properly they aren't all that dangerous.

Though the process of sustaining life should be a rather big process. Energy conversion, fluid filtration, homeostasis, conscious and unconscious thought, motor function, automatic bodily functions, memory creation, sensory imput. I'm sure if we made an electro-mechanical system that did that it would be quite the power sucker.

06-14-2010, 12:53 AM
Some studies suggest, that your physical prowess isn't restricted, as comletely as we might have though, by fat.

06-14-2010, 01:29 AM
as I've said before, being fat, for the most part, isn't in and of itself unhealthy. Just that the life style that leads you to become fat often is.

But yea human body uses alot of energy, being warmblooded, not to mention how much juice that big brain uses up, something like 20% of all our energy just goes to thinking.

For those of you that are curious, average person (2000 calories) is about half a pound of fat.

06-14-2010, 01:33 AM
Also the reason why you might feel very hungry after a lecture.