This page provides a detailed explanation of how post-meal exercise affects blood sugar management. We introduce scientific evidence showing that light aerobic exercise is effective for blood sugar control, with benefits possible from just 2-5 minutes of activity. We are also conducting practical verification using continuous glucose monitoring.
Updated on 2025/03/05
Table of Contents
- Why Exercise After Meals?
- What Type of Exercise Should You Do After Meals?
- Recording Post-Meal Exercise
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Why Exercise After Meals?
Important changes occur in our bodies after eating. Carbohydrates from food are digested and absorbed, entering the bloodstream as glucose (blood sugar), which causes blood sugar levels to rise sharply.
In healthy individuals, the hormone insulin is quickly secreted in response to this rise in blood sugar, working to return blood sugar levels to normal range. Insulin acts like a "key" that allows glucose to enter cells.
However, people with diabetes or pre-diabetes experience problems with insulin function. Whether due to reduced insulin effectiveness (insulin resistance) or delayed secretion timing, this results in prolonged high blood sugar levels after meals.
These extended periods of high blood sugar can cause short-term effects like fatigue and decreased concentration, and in the long term, can put strain on various body tissues including blood vessels, nerves, and kidneys, potentially leading to serious health consequences.
This is where "post-meal exercise" becomes an effective countermeasure.
During exercise, muscles become active and actively consume glucose from the blood as an energy source. A notable point is that this mechanism works independently of insulin, making it effective at lowering blood sugar levels even for those with reduced insulin function.
I utilize this mechanism by performing various exercises after meals and measuring the patterns of blood sugar fluctuation.
What Type of Exercise Should You Do After Meals?
Light aerobic exercise is considered most effective after meals. This is the method recommended by Japan's Ministry of Health, Labour and Welfare in their exercise program for people with Type 2 diabetes.
However, you should avoid exercising too intensely after meals. Intense exercise can actually stimulate the secretion of stress hormones and potentially raise blood sugar levels. Additionally, vigorous exercise during digestion can not only strain your digestive system but also increase cardiac load.
A noteworthy point is that recent research shows even just a few minutes of light exercise after meals can have significant effects on blood sugar control. It has been found that even 2-5 minutes of light walking after meals can effectively suppress blood sugar elevation compared to remaining seated.
I plan to test various types of exercise such as walking, stationary cycling, and squats to investigate how different types of exercise affect blood sugar levels, and will continue to measure their effectiveness.
Recording Post-Meal Exercise
To scientifically verify the effects of post-meal exercise, I will utilize a Continuous Glucose Monitoring (CGM) system. I will continue to test the effectiveness of various post-meal exercises to discover evidence-based methods for effective blood sugar control. I hope these efforts will contribute to long-term health maintenance and longevity.
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