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Although metabolism does tend to shift with age, decades of research demonstrate that such changes are not set in stone. By regularly checking the key biomarkers that reveal your muscle mass, mitochondrial health, thyroid function, inflammatory status, and glucose regulation, you can detect subtle signs of slowdown…
When discussing human metabolism, four concepts often arise: total daily energy expenditure (TEE), basal metabolic rate (BMR), resting metabolic rate (RMR), and the thermic effect of food (TEF). Energy expenditure science can feel alphabet-soup–heavy, so let’s clarify these key terms in more depth: Total Daily Energy…
The reason for that is because exercise causes stress and that stress turns on a whole raft of beneficial effects. And there are really two kinds of this stress. Now, the first kind is energetic stress. Like I went for a run this morning, I spent probably about 500 calories running and I can only do so many things…
In young rats, the researchers found low levels of the protein-breaking enzyme trypsin, although the tiny folds (villi) of the small intestine and the lungs contained more of this molecule. However, trypsin levels were much higher in old animals. “High densities are on sections of the intestine, liver, and lung…
All games are in some way a combination of the four “mother” mechanics: agon, alea, mimicry, and ilinx. Games have strict rules that all players must follow. Game-winning conditions are clearly defined. There are many different ways a game can end—not just one. In other words, there’s a way to win and (usually) lots…
Select two boxes or cans of food that weigh 8 ounces and 16 ounces, respectively. Have students hold each as you tell them (or they read) the weights of the containers. Give students a box or can with the weight covered and have them compare the weight of the new package to the weight of the 8- and 16-ounce samples…
High caloric intake has been associated with an increased risk of cognitive impairment. Total caloric intake is determined by the calories derived from macronutrients. The objective of the study was to investigate the association between percent of daily energy (calories) from macronutrients and incident mild…
To understand why comet showers occur, we go back to the Oort Cloud. The theory of comet showers was worked out by Jack Hills, an American physicist now at Los Alamos. He realized that the movements of the comets in the Oort Cloud are not entirely random. Comets in the cloud are generally moving in random directions…
Salv. But, even without further experiment, it is possible to prove clearly, by means of a short and conclusive argument, that a heavier body does not move more rapidly than a lighter one provided both bodies are of the same material and in short such as those mentioned by Aristotle. But tell me, Simplicio, whether…
Here's a simple question: Why do you weigh more when you go to sleep than when you wake up? Because you do... You can check this yourself. Somehow, while doing absolutely nothing all night but sleep, you will wake up lighter. [...] All night long, every time you breathe out, a bunch of carbon atoms, formerly inside…
The study was conducted to evaluate one aspect of the entropy theory of aging, which hypothesizes that aging is the result of increasing disorder within the body, and which predicts that increasing mass lowers life span. The first evaluation of the impact of human size on longevity or life span in 1978, which was…
Holmes and Watson don’t just differ in the stuff of their attics—in one attic, the furniture acquired by a detective and selfproclaimed loner, who loves music and opera, pipe smoking and indoor target practice, esoteric works on chemistry and renaissance architecture; in the other, that of a war surgeon and…
Why do studies end up with wrong findings? In fact, there are so many distorting forces baked into the process of testing the accuracy of a medical theory, that it’s harder to explain how researchers manage to produce valid findings, aside from sheer luck. To cite just a few of these problems: Mismeasurement To test…
The Way of chess: The best place is the middle of the board, The worst is the side, And the comers are neither good nor bad. This is the eternal law of chess. The law says: "It is better to lose a piece Than to lose the initiative. When you are struck on the left, look to the right, When attacked in the rear, keep an…
About eight days ago I discovered that sulfur in burning, far from losing weight, on the contrary, gains it; it is the same with phosphorus; this increase of weight arises from a prodigious quantity of air that is fixed during combustion and combines with the vapors. This discovery, which I have established by…
Speaking of time, I think it is time to introduce the Picard Maneuver. Jean-Luc became famous for introducing this tactic while stationed aboard the Stargazer. Even though it involves warp travel, or super light speed, which I have argued is impossible in the context of special relativity alone, it does so for just an…
• sleep loss • social isolation • unequal workload • depression
;ct. What parents want even influences the very ways they label children. Sara Harkness and Charles Super found that when parents in three cultures were asked about intelligence, their views of what constitutes a smart child differed.^^ In America, an "intelligent" child is one who is aggressive and competitive; in…
My 165-pound body consists of about 110 pounds of oxygen, 30 pounds of carbon, 16 pounds of hydrogen, 6 pounds of nitrogen, and 3 pounds of everything else. Basic stuff, mostly, the stuff of water and air. You'd think we could get almost everything we need to build our bodies by taking deep breaths and gulps of water…
What memes should you program yourself with, now that you have the chance? The second-most-popular answer (after punting) is: With the truth. It's hard to see how there could be any problem with programming yourself with memes that are true. But remember Alfred North Whitehead: all truths are half-truths. There are…