Everybody knows exercising is important, but a brand new, large study finds not exercising may be more harmful to your health than smoking. Researchers at the Cleveland Clinic studied over 120,000 patients from 1991 to 2014, putting them under treadmill testing and later recording mortality rates. They found a clear connection between a high level of exercise and a longer, healthier life. Study co-author Dr. Wael Jaber explains, “Being unfit on a treadmill or in an exercise stress test has a worse prognosis, as far as death, than being hypertensive, being diabetic or being a current smoker. We’ve never seen something as pronounced as this and as objective as this.” They also found “ultra” exercisers do not face a higher risk of death.