Many people suffer from heart disease and diabetes. It can be hard to know when to exercise to get the best results for your health. New research shows timing is key. Exercising in the morning—between 7 and 8 a.m.—is a great way to protect your heart and metabolism. Early movement is linked to a 30% lower risk of diabetes and a 35% lower risk of obesity. It’s an easy way to stay healthy by changing your morning routine.