Sit-up by Michele Vennard | Aug 15, 2013(not an asana)Strengthens and firms the abdomenIncreases flexibility of the spine, hamstrings and sciatic nerveReleases toxins in the lungsEnergizes Search for: Blog Categories:Bikram YogaCommunity ResourcesMichele’s InsightsNewslettersPosturesTeacher FeatureStory of a Yogi