‘1-Hour Morning Workout Can’t Undo 10 Hours of Sitting’: Heart Surgeon Warns of Health Risks

Do you spend most of your workday sitting at a desk and assume that a morning or evening workout is enough to counter its effects?

Cardiovascular surgeon Dr Jeremy London says that may not be the case, warning that an hour of exercise cannot fully compensate for spending long periods of the day sedentary. In a post shared on August 25, Dr London highlighted the health risks associated with prolonged sitting, linking a sedentary lifestyle to metabolic problems and an increased risk of chronic diseases.

Why can prolonged sitting be harmful?

Dr London cited research published in the Circulation journal in September 2016, which found that Americans spend a substantial portion of their waking hours sitting. Studies and health data, including findings from PubMed and the ICMR-INDIAB study, have also highlighted widespread physical inactivity among Indians.

Extended periods of inactivity can have several consequences. People who spend more time sitting have been associated with a greater risk of premature death, cardiovascular disease and type 2 diabetes. Prolonged sitting can also affect how efficiently the body processes glucose and fats.

“Movement is medicine,” Dr London emphasised, noting that reduced physical activity can slow blood circulation and contribute to gradual weight gain and other metabolic problems.

Can an hour-long workout undo a sedentary day?

For people who exercise regularly but remain seated for most of their working day, Dr London cautioned against viewing a single workout as a complete solution.

“An early morning workout is great, and it’s better than nothing, but a 1-hour workout in the morning does not offset 10 hours of being sedentary,” he said.

Instead, he recommended incorporating more movement throughout the day. Simple changes can help break up long periods of sitting, including:

• Taking the stairs instead of the lift
• Walking during lunch breaks
• Standing while taking phone calls
• Doing a few air squats between meetings
• Stepping outside for a short walk

The key message is that physical activity should not be limited to a single workout. Regular movement throughout the day can help reduce the amount of time spent continuously sitting.

About Dr Jeremy London

Dr Jeremy London is a board-certified cardiovascular surgeon with more than 25 years of experience. He earned his MD from the Medical College of Georgia at Augusta University and focuses on cardiovascular health, preventive medicine, lifestyle and evidence-based approaches to longevity.