From your phrasing, I assume you're talking about the physical postures (asanas) when you say yoga. The physical postures are a part of yoga, but yoga is a more

From your phrasing, I assume you're talking about the physical postures (asanas) when you say yoga. The physical postures are a part of yoga, but yoga is a more complete system including meditation and other practices. Of course everyone has their own ideas about what constitutes yoga, if you ask 10 different people, you'll probably get 10 different answers, but I think it's important to understand that yoga is a whole system of interdependent practices designed and tuned over a very long period of time. In my opinion, the meditation practices are the main or major vehicle of yoga with the rest of the practices providing the necessary support to be able to attain a "higher" or "deeper" level of meditation. That's not to say you can't focus on one part, and if you feel you're benefiting from just the postures, then more power to you and good luck. My point isn't to say my definition of yoga is the correct view, but I think it's a shame that many people misunderstand yoga as being simply a form of physical postures.