It’s well established that exercise is important in the prevention of obesity, type-2 diabetes, and other disorders characterized by metabolic disturbances. Also, since people who are overweight on average are less active than lean people, it’s often assumed that the relationship between physical activity levels and body mass index goes in one direction, in the sense that inactivity leads to weight gain. Lack of self-control and “mental weakness” are often considered the primary reasons people have trouble getting off the couch and into the gym, and the general belief is that folks with excess body fat are less active simply because they lack the willpower and discipline to start exercising. But what if it’s not that easy? Correlation doesn’t imply causation, and although a sedentary lifestyle obviously can contribute to metabolic deregulation and weight gain, it’s becoming increasingly clear that it also works the other way around; that weight gain can make you tired and sedentary.
Eirik Garnas is the creator and owner of Darwinian-Medicine.com. His longstanding interest in nutrition, medicine, and health was spurred by his desire to enhance his athletic performance and physique and overcome various health problems that had come to dominate many aspects of his life. Eirik is formally trained as a nutritionist and holds a bachelor's degree in Public Nutrition and a master's degree in Clinical Nutrition. Additionally, he's coach/trainer schooled at the Norwegian School of Sport Sciences. Over the years, Eirik has gone through several structured courses in order to improve his coaching skills, worked with an assortment of clients, both via the web and in real life (see client testimonials), and developed guides and articles for a variety of health and fitness magazines and websites.