Introduction In the field of human nutrition, it is widely accepted that a balanced intake of protein, fat, and carbohydrates is essential for maintaining physiological function, energy balance, and long-term health. Conventional wisdom—and decades of scientific consensus—emphasize the importance of protein for muscle maintenance and repair, fats for hormone production and cellular integrity, and carbohydrates as a primary energy source. However, in a radical departure from these established principles, this study documents a controlled dietary experiment conducted by Mark Turnbull, in which he consumed only carbohydrates in the form of Fructose a monosaccharide, found naturally in fruits , completely eliminating both protein and fat from his diet. This unconventional experiment directly challenges foundational understandings of human metabolism, particularly the notion that essential amino acids and fatty acids—those which the body cannot synthesize—must be obtained from dietary sources. By analyzing Turnbull’s physiological, metabolic, and psychological responses over the course of this dietary intervention, this paper seeks to explore the limits of human adaptability, question long-held nutritional dogmas, and assess the real-world implications of extreme dietary manipulation. My outcomes for this experiment are to find out the effects of Fibroblast growth factor 21 (FGF21) a metabolic factor produced in the liver, adipose tissue, skeletal muscle, and pancreas tissues, and is known to regulate glucose and lipid metabolism with the knock on effect of Lipolysis (Fat-loss) and dietary adherence Cyclical Macronutrient Cycling: Two Days of Sugar‑Only Intake Followed by One Day of Fat and Protein Consumption Abstract This paper examines a rare and extreme dietary cycle: two days of exclusive sugar consumption, followed by one day of high-fat and protein intake. We investigate metabolic responses—including glycemic control, insulin dynamics, substrate shifts, and lipid metabolism—comparing them to principles from intermittent fasting, ketogenic adaptations, and metabolic switching.

You think you’re “natural” just because you only take creatine? Hate to break it to you, but that’s not exactly true. The creatine you scoop out of a tub isn’t from nature — it’s creatine monohydrate, a fully synthetic compound made in labs from sarcosine and cyanamide. The truly natural form, phosphocreatine, exists only in animal muscle tissue. The powdered version didn’t even exist before the 1950s — that’s why supplement companies proudly label it vegan. So, if your progress comes from lab-made creatine, can you really call yourself natural… or are you just telling yourself that? creatine genuinely works. Over weeks or months, it helps you train harder and lift heavier by boosting ATP, your cells’ main energy source. This translates to real muscle growth, not just water weight. Dozens of studies back it up — showing that creatine users gain more lean mass, strength, and training volume than those taking a placebo.

Hello I’m Mark, your go-to strength coach specializing in body mechanics that work with your body, not against it. I help everyday athletes and fitness enthusiasts unlock their power, move pain-free, and train with purpose—so every workout brings you closer to the strong, capable body you deserve. please send me a message on what may interest you!