“Ultimate Yoga Collection” S:1 E:3 Core Definition Mins :17 Year Released:2016 Lang: English 2016-09-01 S:1 E:3 Core Definition Tighten your entire core while strengthening your back with this series of standing poses featuring Gwen Lawrence’s unique strength-building moves. Watch on Amazon Previous article“15 Minutes With Jacob”Next article“The Art of Public Speaking: Lessons from the Greatest Speeches in History” S:1 E:9 Focus on Your Audience–Gandhi on Trial