Let's get one thing clear about yoga. It's not just for relaxation and it's not just a good stretch. Yoga poses do so much for you on so many levels. Those looking for a serious workout should not discount yoga as too easy or not strenuous enough. Have you seen the body on Madonna? On Jennifer Aniston? On Rodney Yee? I have walked away from yoga practice sweating like and downward dog and I have crawled out of bed the next day feeling like I'd been lifting weights the day before. There are many different styles of yoga and I'm here to tell you, it's all good!