I would know

I don't have page numbers because I read an epub version taken from a PDF that was all over the place.

Women's muscles are significantly less subject to fatigue in tests of isometric muscle endurance (i.e. when lifting lower weights, women can do more reps than men, and can also hold these weights in a static position for longer).

Women's muscles take up oxygen about 30% faster than men's which "scientifically speaking, indicates a superior aerobic system"

Women have a higher proportion og "slow twitch" muscle fibres which are good for endurance exercise and confer a health advantage when it comes to diabetes by increasing insulin sensitivity.

After an hour of exercise at the same level of intensity, women's muscles burn more fat (and less carbs) when compared to men's. This keeps women going in endurance exercises.

Menstrual blood contains mesenchymal stem cells (MSCs). Remnant cells in the uterine lining that heal the uterus each month without scars could also contain stem cells. This could contribute to endometriosis because during menstruation, some menstrual fluid travels up through the fallopian tubes and into the peritoneal cavity. If this fluid carries stem cells associated with the endometrium, it could explain how endometrial cells grow outside the uterus.

In the 1920s, there was debate about whether menstrual blood could harm plants and animals. It was discussed as a "menotoxin" into the mid 20th century and in 1936, research was published about whether menotoxin caused a child's asthma.

Male bodies have 50-100% higher fasting blood glucose levels, and men clear glucose 15% slower than women. Glucose uptake in men can be up to 50% slower. This is one reason why men are more than twice as likely to develop diabetes as women.

Estrogen comes from two sources: the ovaries and the subcutaneous fat on the hips and buttocks. Once a female body goes through menopause, the hip/buttock fat becomes the only source of estrogen, which is important for maintaining bone strength

During pregnancy, the body's energy use increases to 2.2x the basal metabolic rate which is close to the limit of what the human body can handle.

Female small intestines are significantly longer than males, which might explain how women are better able to withstand life stressors like starvation or disease.

Sex hormones influence the gut microbiome, and the microbiome impacts how sex hormones are metabolised. Similarly, vigorous exercise is helpful for gut microbial diversity.

Women's bodies devote more energy to continually educating their b-cells (antibodies) and therefore produce the best-fitting antibodies and fighting infections more effectively than males.

Female sex hormones strengthen the immune system and testosterone suppresses it.

Look at him!

Also he was separated with one of his parents when I saw him but obviously wanted to Be Where The People Penguins Are so they’d set him up with a little rock stool so he could gaze upon his brethren:

Which enabled me to capture the single funniest video I’ve ever taken of anything in my life:

Like, yeah, okay, we know he can make fruit out of pastry and chocolate. We know about the woodworking. Whatever the magic he has with making living creatures and actual pools of water out of chocolate end up being.

🐈‍⬛🤍

Check out this diagram from ResearchGate.  It deals with the color vision of horses, who are also generally dichromatic.  (I think, though I’m not sure, that zebras would have the same color vision as horses.)  See how orange and green look to them?

or how about a leopard?

It’s called ‘disruptive colouration’ because the markings help to break up the animal’s outline against the grasses or rocks. And the rosettes on leopards and jaguars? Sun spots shining through the trees and leaves on the ground.

The colors that seems most pertinent when you look at a forest ecosystem are the bright colors that pop out, however camouflaging animals are trying to blend into the background that you don’t even notice.

There’s a lot of brown, gray and black in this picture, but it’s harder to notice than the green.

That brown, gray and black lurking in the background is what gets you…

With some animals, if you’ve never seen them in a specific environment, you wouldn’t even guess that they ARE camouflaging

My favorite example of this is garter snakes. This lady looks pretty striking, right? Maybe those bold colors are to warn predators…

Spot the snake!

On that note I really wonder how many animals are using camouflage and we can’t even detect it. Like , how many animals have camouflage that can only affect predators that see ultraviolet light? How many animals that look bold to us have colors that their predators can’t see?

…

i thought that must have been the case but i also couldn’t stop thinking that you had done a REALLY good job of making your point and i was about to get eaten by a wolf or something (cause those trees don’t look like the kind of trees I’d expect to see a big cat lurking behind)

I’ve gone ahead and added a dangerous predator so that future generations won’t have to suffer the way I did: