Ben (C) Fletcher is a professor of psychology at the University of Hertfordshire and a renowned expert in behaviour change. The 'Do Something Different' technique that he created with Karen Pine has had huge success in helping people lose weight, tackle stress and improve health and wellbeing.

Karen J. Pine is a professor of psychology at the University of Hertfordshire and a renowned expert in behaviour change. The 'Do Something Different' technique that she created with Ben (C) Fletcher has had huge success in helping people lose weight, tackle stress and improve health and wellbeing.