This is again anecdotal - but farmers all over south asia, (India, Pakistan) are known to ingest several ozs of pure Ghee, more nutritionally dense than butter, when going to plough their fields without the help of tractors etc. and also when out to harvest without the aid of modern machinery.. makes sense.!

My god, large amounts of Kerrygold are my toddler's #1 snack. No wonder he's such a little maniac.

(Side note: there is something so cute about people stopping us the store, full of genuine concern, to alert me to the fact that my baby has gotten into the butter. Other side note: he's chilled out considerably since I got him {mostly} off grains.)

You could try adjusting the amount of butter you eat to get the effect you want for a given activity, now that you know how 1/4 pound affects you.

You are a king amongst men.

Was this inspired by the antics of Homer Simpson?

That's a waffle, but the principle is the same.

Awesome! I gotta try this. You just went into thermogenesis. This happens when you eat more calories that you can't store and is a nice example of how our bodies like to convert and store carbs as fat, but would rather burn fat first when possible.

Keep in mind, fat + carbs together isn't a good thing, so don't eat a huge chunk of carbs along with this, or the carbs will be stored. Forgot the name of the Australian doc who did the anti-fructose video, but he condensed it down to fat + sweet = dead.

After going paleo I've noticed some interesting effects too. I usually have between a teaspoon to a tablespoon of coconut oil and a tablespoon of coconut milk in my coffee and though I skipped breakfast some of the time due to not being hungry, I can go to work with just a t-shirt under a polo shirt and no jacket in 50'F weather. Since I fast walk from the train station to work for about 30mins; if I wear a shirt instead I show up all sweaty.

Haven't tried butter this way, but man, that's tempting! :-)

N= 1 tried to mimic your experiment, but it didnt work for me. I tried with butter, about 500 cals worth, I felt satiated but that was it. Drank that a can of coconut cream in another trial, tasted good, felt very satiated but felt more like a content cat curled up in front of a fire rather than hyperactive chipmunk. Experiment three, a 100 gram block of 86%chocolate, 650 cals worth, I absolutely love chocolate and the endorphins rush from all that cacao goodness was like a hit of drugs, felt really good if a bit nauseous from cocao overload but again no energy burst. I was really hoping to replicate your results, but it just didn't happen.

Ooh, must try this!

I usually have "desert" which consists of Raw Butter, Raw Cream, A bar of 90% Lindts, and occasionally some coconut butter. Its usually around 150g fat. It puts me right to sleep lol.

I used a whole package of Kerry Gold (1600 calories by label) on 8 scrambled eggs and chicken breast. Also had some meatballs...this was a week ago after BJJ and my bodyweight-esque lifting, worked out fasted. No over energy for me, just nice satiety.

This is exactly what happens to me whenever I eat lots of fatty dairy. When I overdo it, it's almost too much to handle, so I have to keep my consumption down when I can.

It makes a huge difference, compared to my usual chronic fatigue. I am still not sure if this is good for me, even though I believe we should do what makes us feel good.

Seth Roberts (the author of the Shang-ri-la Diet) did an experiment, and found that eating more butter improved his cognitive function:

http://quantifiedself.com/2010/09/seth-roberts-on-arithmetic-and/

There was an anecdote in one of the books recommended by the Weston Price Foundation (can't find it right now) that said in certain cultures (I believe in Switzerland) bowls of cream were drank by athletes just before a sporting event as a "sport drink"...

I wrote in a similar thread about my experience with drinking an entire quart of heavy raw cream at once, a similar number of calories (3000+) from fat as a pound of butter. It gave me the same "antsy" feeling, like I needed to run around or lift things, despite it being well after bedtime. I did have some intestinal stress, but cream has other stuff besides the fat, and I had eaten three normal meals that day, so I may have just been too stuffed. Someday I'll try it again first thing in the morning, and see how I feel and how long it takes to get hungry.

This is fascinating, and very fun to read about.

Please also do this experiment with coconut oil, bacon fat, and lard. Do it for us, and do it for science! :-)

You, sir, are a wild man. That's high praise. Love your empirical spirit. You found yourself "leaping over things, doing pullups on tree branches, sprints, anything to get rid of some energy." Then, in search of a larger clinical sample, you repeated the experiment.

Your a brave man! Where you in ketosis when you did this experiment? What are your daily levels of carbohydrates? I know there is a relationship between carbs and the affect of fats in your body. Grass-fed butter is a great food, I tolerate it well too.

I better stop snacking on butter before bed. (I usually have it on pork rinds.)

I tried this the other day and it I just got overheated and sweaty.

This is obviously anecdotal, but I have had a somewhat similar experience. I've been eating have a packet (I guess about the equivalent of one stick) of Kerrygold almost every day. It seems like my energy level and alertness have increased.

Fat has the same effect on me which is why I take a tablespoon or two of coconut oil before a WOD.

I used to have 50-100g of butter in my morning coffee. It gave me nice energy, but not as much as you mention.

This is how my buddies do winter camping and cross country ski trips- all they bring is dried fruit, jerky, and a block of butter. They swear by it for scaling cliffs and 70km+ ski trips. Recently I've been eating berries cooked in butter with cinnamon for breakfast, and I've noticed a mid-morning energy boost that has me running up the stairs of the library and squirming around in my seat. Who knows, may be related!