Feeling down? These brief directed smartphone exercises can help quickly improve your mood suggests a new study. Participants in the University of Basel study felt more alert calmer and uplifted after - using five-minute video tutorials on their smartphones as a guide - they had for example practiced concentrating on their bodies. The subjects could choose between various established or more modern psychotherapeutic exercise modules known as micro-interventions. Some of the participants for example recalled emotional experiences during the exercise while other test subjects repeated short sentences or number sequences in a contemplative manner or played with their facial gestures.