The Stress Mastery Podcast
Bill Cortright discusses truths and falsehoods regarding exercise in the “Myth of Exercise” episode of Stress Mastery Podcast. This episode focuses specifically around weight loss and the effectiveness (or lack thereof) of physical activity and exercise. Cortright analyzes widespread lifestyle trends: exercise rates, obesity rates, and sedentary activities. Although physical exercise is key for optimal health, it has little to no effect on obesity. In looking at the average human’s energy expenditure, humans as a whole are more active than previous years, but also eating exponentially more than previous years. Cortright discusses human BMR (Basal Metabolic Rate), TDEE (Total Daily Energy Expenditure), TEF (Thermogenic Effect of Food), and EPOC (Energy Post Oxygen Consumption). The factor most responsible for body mass is the BMR: BMR is effected by genetics, age, gender, diet, and activity levels. Essentially, the BMR dictates how many calories an individual burns in a day. Additionally, chronic stress triggers an insulin response which alters a person’s BMR.

In listening to this podcast episode, I learned that stress elicits an insulin response, which is consistent with Robert Sapolsky’s views in Why Zebras Don’t Get Ulcers. Additionally, I learned that exercise has a very minimal effect on obesity.
This podcast is relevant to my guiding questions as it explicitly discusses the effects of exercise on the body. Cortright also argues that stress has an impact on obesity and body composition.
Cortright, Bill. “#512 The Myth of Exercise.” The Stress Mastery Podcast: Living Right with Bill Cortright, 19 Feb. 2019, [Audio podcast] player.fm/series/the-stress-mastery-podcast-living-right-with-bill-cortright/ep-512-the-myth-of-exercise.

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