There are numerous reasons to choose Jump Jack! 2003. Here are a just a few of them to consider:
*excludes digital form
New! Now there is another great reason to choose Jump Jack! 2003. Just recently the program has been made available in digital format, which means you can bypass the wait of receiving the program through the mail. Just place your order with a valid credit card and you will be sent an email with Jump Jack! 2003 attached. Not only will you save time going this route, you will also save money. Jump Jack! 2003 in digital format is HALF THE COST as the original (Note: You will need to download WinZip 8.1 to open Jump Jack! 2003 Digital Free Download Here.) How many other programs can you start within minutes of ordering them? That unparalleled commitment to customer satisfaction is what we like to call "The Jump Jack Advantage".
Want to see the research supporting Jump Jack! 2003's techniques? No problem. There's plenty to go around:
Workouts with regular shoes versus workouts with Strength Shoes Medicine and Science in Sports and Exercise, 27(5)
Study showing effects of plyometrics and strength training on power and strength Medicine and Science in Sports and Exercise, 28(5)
Plyometric training for the lower limb Matt Woronczak 1998
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