The only way you will truly have an accurate count of calories burned in any activity is to wear a heart rate monitor. Any other number is just an estimate of what an average person would burn, which is what SP provides--an estimate and nothing more.
I will say I can burn up to 450 calories doing Leslie's 5-mile walk. Her videos are a great workout! I'm 5'2, 123 lbs. and, ahem, 48 years old (older than dirt to my 17 yo). I wear a Polar F6 monitor when I work out--best investment I ever made!
Glad you asked this question. I was just about to ask the same thing. I did one of her DVD's yesterday and I really liked it. I did part of the Four Fast Miles DVD. I'm trying to get back into the routine of exercising so I'm taking baby steps. :)
I just did the "5-Day Slim" tonight and it kicked my behind! Each mile focuses on a specific body part. It's a great DVD, in my opinion! I'm hoping I worked off the bowl of ice cream I had right before! :-O
Walking 3 mph for 65 minutes would burn 302 calories. Walking 4 mph for 65 minutes would burn 357 calories. I used a website to figure this out, just put in your weight and the amount of time you walked. Ill put the link below so you can go check it out.
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