Each week, Saraswathi Devi teaches cobra and downward-facing dog poses to those who need it most -- harried moms and moms-to-be. Her prenatal classes include a relaxing twenty minutes of doing nothing, lying on the floor with a comforting bean bag over your eyes. Then it's about an hour and a half of yoga stretches to help pregnancy woes, cramped legs, and aching backs. All the while, she recites little homeopathic remedies and identifies special pressure points to help alleviate some of the discomfort caused by being thirty pounds heavier than usual. Sometimes, she ends her classes with a fertility chant, in which the women gather in concentric circles, the most-pregnant ones on the inside, while the outside ones chant Ommmm and press their palms toward the inside circle. Very Berkeley; very cool, too. For the toddler class, there are two to three babysitters who take care of the little ones while the moms stretch. The kids can either wander about and stretch with their moms, or go in another room (viewable from the main room) to play with environmentally friendly low-tech dolls, scarves, wooden blocks, and books. Bring your own snacks: vegetarian and organic, of course.