tokens: It also focuses on improving and increasing activities of daily living ; increasing daily healthy habits ( such as normalizing sleep-wake cycles ; increasing early morning natural light exposure ; increasing moderate exercise [ such as 2030 minutes of moderate to brisk early morning to pre-afternoon walking daily , in order to help normalize circadian rhythms ] ; helping individuals understand the specific benefits of healthy food choices ; increasing stress-reduction activities such as yoga , tai chi , or meditation ) ; and decreasing unhealthy behaviors ( such as substance abuse and smoking ) ; thereby significantly improving quality of life .