http://www.onepakistan.com/lifestyle/articles/ ©2007 Spoonlabs d.o.o. Vivvo CMS 4.0 2012-05-21T12:36:13-05:00 http://www.onepakistan.com/lifestyle/articles/health/3092-Group-exercise-boosts-happiness.html 2009-09-16T06:02:00-05:00 2009-09-16T06:02:00-05:00 PPI Karachi, Exercising together appears to increase the level of the feel-good endorphin hormones naturally released during physical exertion, a study suggests.