Jack Mosley on Instagram: "The string test is a quick and easy way to give a rough idea of your metabolic health. The core principle is that your waist should be less than half your height, otherwise you may be at an increased risk of cardio metabolic diseases from heart disease to diabetes to high blood pressure In some ways it is a more practical screening tool than BMI which doesn’t account for distribution of fat or muscle mass"

String theory explained in english!