cmac,

I don't think yoga would make a huge impact on weight unless you're a total load and have been sedentary for many, many years.

I have a lot of experience in this area (not the weight issues, but with yoga) - PM me for more info.

However it will help with flexibility, core strength, alignment, balance and body awareness.

For weight loss, I'd modify diet and walk (fast) an hour every day, along with weight resistance exercises. I think most of it depends on diet and studies show this.

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