Because people with serious mental illnesses like schizophrenia, bipolar disorder, and depression are at higher risk of dying earlier because of higher rates of heart disease among other factors – it is important to reduce that risk with exercise. While there is no one right amount of exercise for all people – for most, thirty minutes of exercise of moderate intensity, such as brisk walking for three days a week should be a minimum goal. Some people may find a step counter, also known pedometer, a useful tool to help them keep track of exercise.