30 Days to Explosive Speed by David Schuman
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Over 30,000 copies sold.Coach Schuman's 30 Days to Amazing Sport Speed Now Available as an Ebook that will be emailed directly to you. In 30 days this book will help develop your speed for any sport. You will become your best self athletically and have up to 4 tenths improvement in the 40 yards dash, up to 6 inches in the vertical, and incredible stamina and speed for your sport.