The glycemic index (GI) measures how different carbohydrates affect blood sugar. Foods that score low on the glycemic index (55 or less) are absorbed slowly, causing a gradual increase in blood sugar.

And that's good for the cells. It's good for the mitochondria inside the cells, the little furnaces that produce energy. All right. So a low-glycemic index diet makes you feel good.

A low-glycemic index (low-GI) diet is a meal plan focused on how foods impact blood sugar levels, also known as blood glucose ...