Sublime

low-intensity physical exercise, including walking, exerts anti-aging effects and helps prevent age-related diseases, making it a powerful tool for promoting healthy aging. This is exemplified by the lifestyles of individuals in Blue Zones, regions of the world with the highest concentration of centenarians. Walking and other low-intensity physical

It is sometimes argued that our body temperature is set at 98.6 degrees for the same reason that we feel comfortable in a room at 70 degrees. A little over two million years ago, humans emerged in Africa in sites where the median daily temperature is in the low 70s. Thus, a body temperature in the high 90s optimizes the necessary dissipation of hea

Chief among these myths is the notion that we are supposed to want to exercise. There is a class of people whom I define as “exercists” who like to brag about exercise and who repeatedly remind us that exercise is medicine, a magic pill that slows aging and delays death. You know the type.

I am intrigued with the challenge of mismatch, the disconnect between ancient bodies and the modern world.

As for meat, let me say it upfront: Humans haven’t fully adapted to eating meat. Unlike other predators, we lack enzymes that convert degraded “D” proteins into live “L” proteins. All life forms on this planet are made from “L” proteins. Nonetheless, upon the death of an organism,“L” proteins convert spontaneously into “D” proteins. This process, k

When my colleague Dr. Aaron Baggish attached accelerometers (tiny devices, like Fitbits, that measure steps per day) to more than twenty Tarahumara men, he discovered they walked on average ten miles a day. In other words, the training that enables them to run back-to-back marathons is the physical work that is part and parcel of their everyday lif