Research of the Week
Self-expanding activities increase sexual desire in long-term couples.
Why you’re so naked and sweaty.
New isotope analysis reveals that Neanderthals were mostly carnivorous.
Alzheimer’s can’t touch musical memories.
We have a 7th sense—the link between the brain and the immune system.
Why the zebra got his stripes.
Jessica Gouthro from Paleohacks is joining us today to offer tips for bodyweight-focused arm workouts. Enjoy, everyone.
Do you ever have those days when you want a good arm workout, but you don’t have any workout equipment?
Curls, presses, tricep kickbacks, and rows are all great for your arms if you’re at the gym with plenty of dumbbells, barbells and cable machines. But what about those days that you just can’t make it to the gym—or simply don’t want to?
Luckily, I’m here to prove to you that a good bodyweight workout is just as good as what you can get at the gym. The best part is, you don’t need anything other than yourself and just 15 minutes at a time to sculpt and tone your arms into incredible shape.
I know we missed Valentine’s Day, but I’ve always said love cannot be contained. Besides: People are always going on dates. People are always searching for new ways to break out of the regular mold, which is completely understandable. Dates are try-outs. You’re spending time with another person to determine how they fit into your life. Unconventional dates that branch out from “dinner, movie, drinks” into more adventurous, creative realms provide excellent feedback for making that determination.
Dates are also a way for established couples to keep things fresh and exciting, to keep the relationship moving. There’s no better way than to try something new.
As it happens, most work for friends, too.
Now, some of these dates are silly or out-of-left field. Some are more serious. And one is a Primal Costanza date—what not to do. But regardless, they are all worth exploring. And—as always—I’d love to hear what you’d add.
For today’s edition of Dear Mark, I’m answering three questions. First, can LDL actually infiltrate the arteries, or is there more to the story? Malcolm Kendrick says there’s more to the story, so I dig into some literature to see if they corroborate his position. Second, is New Zealand farmed salmon good to eat? And finally, what should you do about elevated ferritin levels—and why else might they be elevated if not because of your iron?
Success stories will be back in their regular slot next Monday, but for today I want to issue an invitation.
Now that we’ve turned the corner on the first month of the year, I know some of you have already seen big success with Primal or Primal-keto living. And I’d love to share your stories—to help inspire others here and to offer the kind of varied and personal accounts that only reader experiences can. Will you join the hundreds of others who have helped along the way?
Research of the Week
Stimulating the vagus nerve helps PTSD.
Exercise has a stronger effect on cognitive function in older men than older women (who already had better function at baseline).
Estrogen controls type 2 diabetes.
Small teams of scientists disrupt ideas, larger teams develop ideas.
AIs are great at colluding.
If you have a family history of obesity, eat fish. Habitual intake of fatty fish limits genetically-associated weight gain.