definitive guides

What are saturated fats, exactly? Today, I’m diving into the nuances of saturated fatty acids — a guide to all the individual fatty acids that make up the saturated fats we eat, store, and burn. I won’t cover every single saturated fatty acid in existence. Some don’t play any significant role in human health or diet,...

Contrary to what we’ve been told, cholesterol didn’t evolve to give us heart disease. It’s not here to kill us. The actual roles of cholesterol in the body include insulating neurons, building and maintaining cellular membranes, participating in the immune response, metabolizing fat soluble vitamins, synthesizing vitamin D, producing bile, and kick-starting the body’s synthesis...

Cholesterol usually gets the gold for most demonized nutrient, and fats undoubtedly take the silver. It’s time to confront the misunderstandings around fats. When I switched from a high-carb, low-fat diet and started to eat healthy fat as a nutrient, my health rapidly transformed. As important as fat is to your body, the fact remains that...

As Primal enthusiasts know, sprinting is an essential element to leading an optimally fit life. After all, it’s one of the 10 Primal Blueprint Laws, and perhaps the quintessential anti-aging activity. Brief, explosive all-out sprints are the single best activity to promote rapid reduction of excess body fat, achieve fitness breakthroughs, flood the bloodstream with...

Now that you’ve absorbed the rationale and benefits to add sprinting to your fitness program with Part One of the Definitive Guide To Sprinting, let’s get into the details of how to conduct a great workout. The following five guidelines are presented in logical succession, so you can refer to them frequently and ensure a...

One of the most common questions I get is “Does [x] break a fast?” What they’re really inquiring about is: “Does this interfere with, negate, or nullify the benefits of fasting?” These benefits include: Ketosis: Fasting is the quickest way to get into ketosis, an metabolic state characterized by increasing fat burning, fat adaptation, and—in some people—improved cognitive...

Biological systems are self-maintaining. They have to be. We don’t have maintenance workers, mechanics, troubleshooters that can “take a look inside” and make sure everything’s running smoothly. Doctors perform a kind of biological maintenance, but even they are working blind from the outside. No, for life to sustain itself, it has to perform automatic maintenance work...

Cold is really catching these days. Aubrey Marcus, whom I recently filmed a nice podcast with, was asked about his winning daily behaviors on another show. The very first thing he mentioned was “exposure to cold.” His practice is finishing his morning shower with a three-minute stint at full cold setting. He mentioned the hormonal...