The Evolutionary Psychology Of Friendship - Dr Jaimie Krems - #553

**Chris Williamson** (0:00)
Hello everybody, welcome back to the show. My guest today is Dr. Jaimie Krems. She's an assistant professor at Oklahoma State University and a social psychologist whose research explores human social cognition, emotions and behavior. Evolution has shaped the way that men and women make and break friendships. It's made us into life-saving, caring, aggressive, jealous, friend guarding, backbiting, gossiping animals. But why is it that male and female friendships are so different? Plus, a ton of other fascinating insights. Expect to learn why a woman's body shape is so important to her attractiveness, why venting is a manipulative social strategy, how men with dadbods are literally perceived as better dads, why women who have casual sex are seen as having lower self-esteem, even though there's no data to back it up, how a pro-life stance on abortion might be less virtuous than people first think, and much more. In other news, this episode is brought to you by Eight Sleep. Good sleep is the ultimate game changer, and yet still 30% of people struggle with sleep, and temperature is one of the main causes of poor sleep. The Pod Pro and Pod Pro cover by Eight Sleep is the most advanced solution on the market for thermoregulation. It pairs dynamic cooling and heating with biometric tracking, can add the cover to any mattress, and start sleeping as cool as 55 degrees Fahrenheit or as hot as 110 degrees. The temperature gets adjusted based on your sleep stages. It gives you a readout in the morning of how well you slept. It even has different halves of the bed for you and your partner. And the result is that Eight Sleep users fall asleep up to 32% faster, reduce sleep interruptions by 40% and get more overall restful sleep. Also, if you have been on the fence about this, they have got exclusive holiday savings right now. If you go to eightsleep.com/modernwisdom, that's E I G H T sleep.com/modernwisdom. They ship to the UK, USA and Canada. So no matter where you are, take advantage of this deal. In other other news, this episode is brought to you by Manscaped. The number one men's below the waist grooming company in the world has just released their new and improved lawnmower 4 engineered to be the ultimate ball and body hair trimmer with a 90 minute battery so you can take a longer shave. If you're a particularly hairy gentleman, it's got a cutting edge ceramic blade to reduce grooming accidents, waterproof technology, which allows you to groom in the shower, an LED light which illuminates grooming areas for a closer and more precise trim, or if you just want to do it in the dark perhaps, and there is a 7,000 RPM motor with quiet struck technology. Altogether, it means you don't have to use an old face shaver from seven Christmases ago to trim yourself and nick yourself and feel incredibly anxious before you have to do it. And you can get 20% off and free shipping site-wide. So if you or the man in your life is just getting a little bit too hairy, this is a fantastic gift. Go to manscaped.com, use the code Modern Wisdom to get 20% off and free shipping. That's manscaped.com and Modern Wisdom for 20% off and free worldwide shipping. And in final news, this episode is brought to you by Athletic Greens. You're not eating enough fruit and vegetables in your diet and you know it. And this is going to help. With so many stresses in life, it is difficult to maintain effective nutritional habits and give our bodies the nutrients it needs to thrive. Busy schedules, poor sleep, exercise, the environment, stress or simply not eating enough of the right foods can leave us deficient in key nutrients. Athletic Greens is the best greens drink that I've ever found. I'd heard Tim Ferriss talk about it for years and then other people whose health advice I respect like Dr. Andrew Huberman or Dr. David Sinclair, they were all harping on about it and it makes sense. It's the most complete and best tasting greens drink that I've found and it is a staple of my daily supplement regime. I miss it when I'm away and I highly, highly recommend taking it if you're looking to make an upgrade to your nutritional habits. Also, you can get a free years supply of vitamin D, five free travel packs and a 60 day money back guarantee. So you can buy it and try it for 59 days. And if you don't like it, then they'll give you a money back. Head to athleticgreens.com/modernwisdom. That's athleticgreens.com/modernwisdom.
But now, ladies and gentlemen, please welcome Jaimie Krems.
Jaimie Krems, welcome to the show.