Health loss often results in loss of confidence, social life and financial security. A solution appears to be simple; a healthy lifestyle. Though, many of us lack physcial activity. The amount of people dealing with obesity is still growing. Tessa has found a way to get people off the couch and into exercise. The participants did not only lose weight, they actually started to enjoy the exercise! Are you curious to get to know Tessa's secret? Watch her TED Talk! Tessa works as an occupational health physician at Erasmus MC and has been promoted on an eHealth lifestyle-related intervention in health promotion. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx