How my on-air'brain fog' moment sparked a big debate When I rather nervously shared a personal post about dealing with brain fog at work on the social network LinkedIn last week, I had no idea that it would have such an enormous impact. It's been viewed hundreds of thousands of times. Women have stopped me on the street to talk to me about it. I've been overwhelmed by hundreds of messages from people sharing support and their own experiences of it. Usually I cover technology news.

Ever looked in the mirror to see what messages you've unknowingly been giving off to those around you? Whether we like it or not, our faces are hugely important in shaping how we are perceived. And some studies even suggest that our faces can reveal hidden details of our personalities. From the size of your cheeks to the movement of your eyes, there is a lot to discover in the humble mug. So, what does your face say about you? Some argue that having a wider face is a sign of higher testosterone.

The anthropologist and famed love expert Helen Fisher seemed ready to dash into oncoming traffic. We were on a sidewalk in Manhattan, opposite the American Museum of Natural History, and nowhere near a safe place to cross the street. She wanted me to stare down the yellow cabs and charge off the curb, though she knew I wouldn't do it: I'd recently taken the personality questionnaire she wrote 17 years ago for a dating website, which produced the insight that I am a cautious, conventional rule follower. She, however, is an "explorer"--she has visited 111 countries, including North Korea--but also, being high in estrogen, a "negotiator" who will use the crosswalk for my benefit. "I am horribly empathetic," she told me. I look into baby carriages and worry about their future with love." This is how Fisher, the 77-year-old chief scientific adviser for Match.com and one of the best-known, most-often-quoted experts on romance and "mate choice," understands life: Personality is a cocktail of ...

How to Do It is Slate's sex advice column. Send it to Stoya and Rich here. My first crush ever was on my uncle. I've noticed an attraction to two of my cousins. I've never, ever considered acting on these desires or told anyone, but I'm wondering if this is normal. Is my brain missing the evolutionary programming that makes you not want to fuck your family?

Men with long facial features and large eyes, and women with slim faces and small eyes are percieved as more promiscuous, a new study has revealed. However, this perception only rings true for men, and not for women, according to the researchers. In the study, experts in Australia asked heterosexual men and women about their levels of'sociosexuality' – the willingness to engage in sexual activity outside of a committed relationship, also known as casual sex. The participants also had their photos taken and shown to other participants of the opposite sex, so they could judge, based on looks alone, if they had an interest in sociosexuality. Men who were open to casual sex typically had longer faces, higher foreheads, longer noses and larger eyes, the team found.

We determine your cholesterol ratio by dividing your total cholesterol by your HDL number. For instance, if your total cholesterol is 180 and your HDL is 82, your cholesterol ratio is 2.2. According to the American Heart Association (AHA), you should aim to keep your ratio below 5, with the ideal cholesterol ratio being 3.5. Men According to the Framingham Heart Study, a cholesterol ratio of 5 indicates average risk of heart disease for men. Men have double the risk for heart disease if their ratio reaches 9.6, and they have roughly half the average risk for heart disease with a cholesterol ratio of 3.4.

Puts, D.A., McDaniel, M.A., Jordan, C.L., & Breedlove, S.M. Spatial ability and prenatal androgens: Meta-analysis of CAH and digit ratio studies.

Methods 2127 observations of competition best performances and mass spectrometry-measured serum androgen concentrations, obtained during the 2011 and 2013 International Association of Athletics Federations World Championships, were analysed in male and female elite track and field athletes. To test the influence of serum androgen levels on performance, male and female athletes were classified in tertiles according to their free testosterone (fT) concentration and the best competition results achieved in the highest and lowest fT tertiles were then compared. Results The type of athletic event did not influence fT concentration among elite women, whereas male sprinters showed higher values for fT than male athletes in other events. Men involved in all throwing events showed significantly (p 0.05) lower testosterone and sex hormone binding globulin than men in other events. When compared with the lowest female fT tertile, women with the highest fT tertile performed significantly (p 0.05) better in 400 m, 400 m hurdles, 800 m, hammer throw, and pole vault with margins of 2.73%, 2.78%, 1.78%, 4.53%, and 2.94%, respectively. Such a pattern was not found in any of the male athletic events. I'm sure you wouldn't be surprised to see these kinds of mistakes in published work. What is more distressing is that this evidence is said to be a key submission in the IAAF's upcoming case against CAS [the Court of Arbitration for Sport], since the CAS has argued that sex classification on the basis of T levels are only justified if high T confers a "significant competitive advantage".

Testosterone has long been associated with aggression and competition in men. But the versatile sex hormone can also impact a range of emotional states including empathy, generosity, of corruption, and risk taking. Experts speculate that there may be more to the hormone than first thought, and that testosterone could be just as useful for cooperation as competition. Testosterone has long been associated with aggression and competition in men. It seems that for every question scientists answer on testosterone, more are raised in its place.

Testosterone gets a pretty bad reputation. It's been long known as the hormone of aggression. In his 1998 book, The Trouble With Testosterone: And Other Essays on the Biology of the Human Predicament, the neuroscientist Robert Sapolsky writes, "What evidence links testosterone with aggression? Some pretty obvious stuff": Males tend to have more testosterone than women, and tend to be more aggressive. "Times of life when males are swimming in testosterone (for example, after reaching puberty) correspond to when aggression peaks."