Ultra fast keto boost reviews You can usually find these at your local sporting goods/fitness shop. If you can't find them locally, you can order them off the internet. Calipers measure the thickness of a skin fold on your triceps. Then there are directions that come with the caliper that show you how to use the number you get to derive your body fat %. If you don't want to go out and buy some calipers, there is a body fat % calculator on my website.
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