The sweat drips from my body onto the mat, already wet from 70 minutes of Hot Bikram Yoga. Yuk!! And now the teacher is imploring me and every other student in the session to 'let go' of the attachment we've made to the last posture. "Just let it go. It's over! Relax in savasana".Savasana is a yoga position where you lie on your back on your mat completely...