This article is Part 2 of a series of “Behind the Scenes” articles about the MacroFactor app. In this article, Greg addresses the two most important aspects of MacroFactor: how the app actually works, and the overall philosophy that infuses the app.
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Some fitness professionals have questioned the importance of dietary carbohydrate, given that resistance training only depletes 24-40% of muscle glycogen. New data suggest that small reductions in muscle glycogen might have bigger performance impacts than once thought. Read on to learn about some very important carbohydrate research.
We published articles that questioned the popular belief that high body-fat levels impair p-ratios. Menno Henselmans published a rebuttal on his site shortly thereafter. We responded to his rebuttal, and shortly after our rebuttal was posted, Menno added to his article to respond to it. Unfortunately we feel the need to respond yet again, as his response lacked substance and was pretty misleading.
Many people believe that if you get lean before you start a bulk, you’ll gain muscle more efficiently. Their reasoning often relates to concerns about insulin sensitivity: if you have more body fat, your insulin sensitivity will be lower, so you’ll gain more fat and less muscle in a calorie surplus. However, the evidence for this concept is surprisingly thin and shaky. In this article, we delve into what the science really says on the topic.
Vitamin D deficiency is shockingly common in athletes, and low levels are associated with reduced strength. A recent meta-analysis suggested that vitamin D supplementation failed to enhance strength in athletes, but there’s more to this paper than meets the eye. Read on to figure out if vitamin D supplementation might be worth considering.
It’s commonly believed that myonuclei – the “control centers” of muscle fibers – are added to muscle fibers when fibers grow, but aren’t lost by fibers when they shrink, facilitating muscle re-growth. This is a proposed mechanism for the phenomenon of “muscle memory.” However, a recent review suggests that the data is less conclusive than people may realize.