I like reviewing yoga videos on YouTube but for me, nothing beats the guided class before large mirrors in a Hot Room. A good guide yogi helps me focus my breath and movement - the wall of mirrors make me focus on the depth and precision of my postures. And the class of yoga students beside and around me, helps to build a network of energy that I never achieve while practicing at home. Of course, the hot room heated to 35C to 40C helps me sweat in a way that I cannot achieve at home.