Exercise improves many dangerous metabolic, cardiovascular and respiratory conditions and has consequently a favorable impact on mortality. However, in a society where the lifestyle becomes increasingly sedentary, physicians struggle to convince their patients to exercise more. Connected devices and mobile applications combine motivational programs with objective measurements of activity level. In the 2015 IMS report about patient adoption of mobile health, Barbara Spurrier of Mayo Clinic said that “we are trying to integrate mobile health into the lives of people and patients to help empower them in self-management and have the peace of mind to know when to take action”.