
And it is not what you think.
When I meet with new clients, part of the intake process involves getting to know their exercise habits (or lack thereof). This includes whether they spend a lot of time sitting or on their feet. This is a question asked by many physicians as well.
A recent article in the JAMA Network Open from 2023, “Dose-Response Associations Between Accelerometry Measured Physical Activity and Sedentary Time and All-Cause Mortality,” explores the risk of long-time sedentary behavior–in other words, being a couch potato. The article shows that this kind of behavior can have serious negative health consequences even when a person is engaged in regular exercise. What is important is the total amount of movement on average each day–not just how long a workout is. The effects of sitting on the couch or at a desk for prolonged periods of time cannot be “out-exercised.” That is why it is important to take regular breaks (every 30-45 minutes) to take a short walk, do a mobility exercise, or just stand.
This brings us to the snack. In the past I have blogged about “quickies,” short bursts of exercise that still have a positive influence on our fitness. The new cool term for this is according to the British Journal of Sports Medicine is an “exercise snack.” The general guideline is that we should engage in 150 minutes of exercise weekly. That could be five 30-minute workouts, or two 45-minutes + two 30-minutes, or any other combo. Research shows that even snacks of five minutes can be effective; the research in BJSM indicates that as little as 30 seconds has an impact. When done regularly, these “micro-workouts” can move the needle to greater fitness and health. If setting aside 30 minutes five times per week seems daunting, this can be a great way to work toward the goal of 150.
The most important take-aways are that being sedentary has negative effects that are often difficult to overcome. One of the ways to counteract the couch potato effect may be as simple as grabbing a snack–just make sure it is an exercise snack and not a giant bag of cheese puffs!








