Personal Activity Intelligence and Body Weight

Participants randomized to the PAI eHealth program will be given a Mio Slice wristband (http://www.mioglobal.com/pai/), to measure the heart rate for calculating PAI. A weekly PAI of 100 can be achieved by a combination of different exercise intensities and the participants will, at any time, get information from the device (Mio Slice) (and the PAI App if they chose to use that as well) regarding how many minutes at specified heart rates is needed to achieve the weekly goal of 100 PAI. Participants will receive automatic feedback on a daily basis, and data will be automatically recorded on a secured server.