im getting an x-mass gift for my sister, and she is trying to lose weight, and i wondered if there were any calorie burner calculator, similar to a pedometer but it tracks exactly how many calories you burned each day doing everything you do, walking, sleeping, sitting, writing, thinking, breathing, riding horses, basically what ever you do each day and how many calories it burns, price doesn't matter, but doe such a thing exist.. does it look like the link below tracks calories burned doing everything, not just walking?

http://www.walmart.com/catalog/product.do?product_id=5543959

thanks