Skip to Content


The CrossFit stimulus—constantly varied high-intensity functional movement coupled with meat and vegetables, nuts and seeds, some fruit, little starch, and no sugar—prepares you for the demands of a healthy, functional, independent life and provides a hedge against chronic disease and incapacity. This stimulus is elegant in the mathematical sense of being marked by simplicity and efficacy. The proven elements of this broad, general, and inclusive fitness, in terms of both movement and nutrition, are what we term our CrossFit Essentials.

“Given the strong evidence for a direct role of physical activity in the prevention of insulin resistance, and the fact that exercise training increases mitochondrial biogenesis and improves glucose tolerance and insulin action in individuals with insulin resistance and type 2 diabetes, the question of why such a potent modulator of these conditions is not more commonly prescribed is perplexing and should be of utmost concern to medical health care professionals worldwide. To continue to attack the growing health burden by investing almost exclusively in strategies that target secondary and tertiary treatment of chronic disease states (i.e. pharmaceutical interventions) is extremely short sighted: primary defence mechanisms (i.e. exercise/diet and lifestyle interventions) will decrease disease prevalence by preventing these conditions in the first place!”

Read MoreExercise as a therapeutic intervention for the prevention and treatment of insulin resistance

By the 1980s, the diet-heart hypothesis had become widely accepted both by the scientific community and the general public, influencing the national nutrition recommendations in the U.S. and U.K. Here, Dr. Malcolm Kendrick highlights a key book and important meta-analysis that sought to demonstrate the existing scientific evidence did not support the hypothesis, despite its widespread acceptance.

Read MoreThe diet-heart hypothesis, part 2

The vertebral column has two types of curves: kyphotic (an anterior arch) and lordotic (a posterior arch). A degree of kyphosis and lordosis is necessary to provide ergonomic support for the internal viscera and the body as a whole. Too much rounding (rolling the shoulders forward) or too much arching (pulling the shoulders back and pushing the gut forward) makes the vertebral column behave much like a shock absorber and dampens force transfer.

Read MoreVertebral Curves

The sacrum sits below the lumbar vertebrae in the stack of bones we call the vertebral column (or spine in an anatomically incorrect nomenclature). When viewed from the back, it presents as a roughly triangular-shaped bone with four sets of foramen (the sacral foramen), which are aligned roughly vertically. Just inferior to the sacrum is the coccyx or tailbone. This fusion of four or five vertebrae is the termination of the axial skeleton.

Read MoreThe Sacrum & Coccyx

This paper summarizes the findings of the 2017 CrossFit Foundation Academic Conference, “Diet and Cardiometabolic Health - Beyond Calories.” The conference was convened to consider a specific question from multiple angles: Do specific dietary components have an impact on metabolism and/or disease risk that is not fully explained by their caloric value? The paper demonstrates the inherent flaws in existing evidence in nutrition science and highlights the single strongest conclusion that emerged from the conference: that compared to other carbohydrates (e.g., starch), added sugars lead to greater increases in a variety of cardiometabolic risk factors.

Read MorePathways and mechanisms linking dietary components to cardiometabolic disease: thinking beyond calories

Technique is everything. It is at the heart of our quantification. You will not express power in significant measure without technique. You might expend a lot of energy, but you will not see the productive application of force. You will not be able to complete functional tasks efficiently or effectively. You will not be safe in trying.

Read MoreTechnique

“Here, we have taken advantage of cancer cells’ relative independence from growth signals and unresponsiveness to anti-growth signals to show that this inability of cancer cells to properly respond to extreme environments renders them unable to cope effectively with the markedly altered concentrations of glucose, growth factors, and other molecules caused by fasting.”

Read MoreFasting Cycles Retard Growth of Tumors and Sensitize a Range of Cancer Cell Types to Chemotherapy

Comments on undefined