Roger Ulrich developed psychoevolutionary theory to explain how exposure to natural environments like gardens can promote health and wellness. The theory posits that being in nature provides restorative and coping resources like mild exercise, social support, feeling in control, and natural distractions that help reduce stress and enhance one's ability to cope. This restoration and stress-buffering in turn leads to improved health outcomes for patients. The theory has been applied in healthcare settings to incorporate gardens and plants into facilities to benefit patients, visitors, and staff.