Physical activity and nutrition are two key factors for a healthy lifestyle. Both are not only difficult to modify for people on the long-term, they are also difficult to measure accurately. The researcher focusses on the improvement of physical activity behaviour. He is looking into how these activities can be measures in a correct way with existing devises and how this can be integrated with other aspects that influence physical activity such as your location, the amount of sleep, mood or stress levels.

Through the combination of these factors the researcher hopes to get a better understanding of the behaviour of a person. Subsequently, based on this combined data the researcher aims to design novel interventions to change the behaviour in a positive way. Conventional physical activity interventions come in the form of a training schedule that tells you what to do. Novel interventions should be smarter, dynamic and context dependent: tailored on you daily schedule, combined with other data such as the weather conditions and how you feel today.