Simple muscular actions creating positive or negative emotions?

Can a study, published in the journal Cognition (April 2010), change our approach to Physical Activity? To creating training programs? Could your choice of physical activities leave you feeling great - or depressed?

In the study simple muscle movement like moving marbles upward, or downward seemed to change people’s emotional memories. Muscle movement upward caused participants to remember more positive life experiences. Muscle movement downward resulted in more negative experiences.

Is it possible that motor actions can really change our emotions?

These researchers seem to believe there is a correlation.