The Jackknife July 1, 2016 The Jackknife Alisa Wyatt Observe & Learn | Exercise Library Watch the preview Log in or subscribe now to get full access to this video. Username Password Remember Me Forgot Password 1 Find out how to succeed at the Jackknife with Alisa's quick demo. Share this class: Other classes you might like Open Leg Rocker Alisa Wyatt 4:54 | Observe & Learn Pilates Hacks: Shoulder Bridge Prep Alycea Ungaro 3:13 | Observe & Learn The Teaser Alisa Wyatt 4:32 | Observe & Learn What Others Are Saying 2 Comments Geovannal 1 year ago Log in to reply. awesome…. thanks for all little details robertapilates 3 years ago Log in to reply. Nice! Leave a reply Click here to cancel the replyYou must be logged in to post a comment.