Calculating Exercise

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One of my friends here today..logged in exercise for cleaning house, something which I never thought to count, so I decided to try and find out what calories were burned grocery shopping and I found a sight at the URL below that helped me fiqure it out based on my height, weight, and age so I thought I'd share it....

http://www.fitday.com/webfit/burned/calories_burned_Food_shopping_with_grocery_cart.html