Allyson Felix used this strength training system right before she ran the fastest 200 meters in the world back in 2003.
Source: Tim Ferriss, The 4-Hour Body – Effortless Superhuman
Amazon.com Price: $35.97 (as of 2018-10-20 13:43:20 GMT)
Product prices and availability are accurate as of the date/time indicated and are
subject to change. Any price and availability information displayed on Amazon.com at
the time of purchase will apply to the purchase of this product.
High school phenomenon Allyson Felix used this strength training system to run the fastest 200 meters in the world in 2003. Based upon physiology and physics, it incorporates the most recent studies in running mechanics. This training program will dramatically increase running speed, jumping height and muscle power for all athletes.