It also works with — rather than against — our body’s biological clocks, or circadian rhythms. In the morning, our internal clocks increase insulin sensitivity and decrease the sleep hormone melatonin. In the evening, insulin sensitivity goes down as melatonin increases, preparing our body for rest and cell repair. These natural patterns make it easier for the body to process food, especially carbohydrates, in the daytime than in the evening. And that helps maintain healthy blood sugar levels and has other metabolic benefits that studies suggest are linked to a reduced risk of heart disease, Type 2 diabetes, obesity and some types of cancer.