Even if I eat the same thing, my blood sugar levels vary every day. Why is that?

The most influential factor on blood sugar after meals is exercise.

How much activity there is,

Blood sugar levels vary depending on the type of exercise performed.

Sleep and stress are also important factors that cause fluctuations in blood sugar levels.

If you slept deeply enough the night before, your blood sugar levels will be stable.

There is also a U.S. study showing that people who sleep well have a 58% lower risk of diabetes.

When you are stressed, your sympathetic nervous system becomes activated.

The brain can send more glucose to various parts of the body, which may cause blood sugar levels to rise.

Blood sugar levels are not only affected by what you eat.

Therefore, you need to manage your overall lifestyle to keep your blood sugar stable.

One-line summary: Manage all aspects of your life, including meals, exercise, sleep, and stress!