Biomechanics of Bi-articular muscles presentation How do the Hamstrings work during Stance Phase of Sprinting? How is Delayed Knee Extension Created? What did Frans Bosch get wrong about the Hamstrings & secret Bonus that you’ll see after signing up - ALL FOR FREE. First Name Last Name Email Address Get Free Access Now We respect your privacy. We will not send you any bullshit. Value only. Thank you! Go download your free plyo guide right now.Make sure to check your junk-folder & move the message to your regular inbox to not miss future E-Mails.