I’ve been getting a slew of emails lately from marathon runners and other endurance athletes among our group, many in response to our 30-Day Primal Health Challenge. Questions have run the gamut but generally get at how to combine endurance training and Primal Blueprint methodology:
How do I combine a low carb diet with marathon training? (Hint: you generally can’t)
What would you recommend for carb refueling post-race?
Can I even do the PB challenge if I have to adapt the diet for training purposes?
What are ketones? How does ketosis play into the Primal Blueprint? Did our bodies evolve to run on ketones? If not, why do they exist?
Ketones, to put it briefly, are compounds created by the body when it burns fat stores for energy. When you consume a diet very low in carbohydrates, the body responds to the significantly lowered levels of blood sugar by flipping the switch to another power source. The body converts fatty acids in the liver to ketones. Ketones, then, become the main energy source as long as blood sugar levels remain low.
What’s the story about certain kinds of vitamin C, calcium, etc.? Does it make any difference?
Because we live in a more complicated, modern world with chronic stress, pollution, etc., I always suggest wise supplementation for optimum health. The best supplementation is effectively comprehensive, properly balanced, and efficiently bioavailable. Some forms of some nutrients are simply more readily absorbed than others. Additionally, some forms of certain nutrients are easier on the digestive system than others, particularly in those with stomach sensitivity.
When it comes to food, you want the best your money can buy, and the same thing goes for supplementation. Different supplements (we’ll stick with “multivitamins” for now) fulfill their nutritional claims differently. Some forms of certain nutrients, generally the more bioavailable and stomach-friendly forms, are more expensive than less bioavailable or harsher forms.
I’m interested in a list of all the manufactured foods that contain high fructose corn syrup. Also, is HFCS also used in wine making?
Thanks to reader Cheryl for this question. First off, let’s talk a bit about high fructose corn syrup. HFCS, as it’s known, is an omnipresent sweetener and preservative found in many/most processed foods. After corn is soaked and separated, sugar present in the cornstarch is processed (with the use of enzymes) to increase fructose content. Corn syrup is then added. The resulting HFCS contains some proportion of fructose to glucose depending on its intended use (typically 55:45 for soft drinks, 42:58 for many baked goods).
I always hear that I should be drinking eight glasses of water a day, but it takes a lot of unnatural effort to get close to that. Is it just me? What’s your take on the water rule?
As you know by now, my job is to question Conventional Wisdom. One of the classic health paradigms I’ve always had a problem with is the blanket recommendation by the general health community that we all should be consuming copious amounts of water. It just doesn’t make sense to me and it never has. Face it, Grok did NOT walk around with a canteen or an Evian bottle affixed to his loincloth. He and the Grok family thought Nalgene was the name of the tribe across the valley and they never owned a sippy cup with which to gulp down mass quantities of H20. Day after day it was a drop here and a mouthful there – if a source of water other than a dewy leaf was even available. Since Grok and his cadre probably didn’t spend too much time hanging around the water hole. (All those predators you know…) 8 glasses of water a day is unlikely a physiological necessity, not to mention an evolutionarily relevant model. Grok obtained most of his water directly from the food he ate, and I believe that we probably should, too.
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