To get the most out of those tractor steers, it is best to make a large effort to include your core in every part of the movement. Wrenching that weight to the R & L using your shoulders will deliver more stimulus to the abdominals, shoulders and legs. You'll notice in the video Angie is doing just that.
Strong work! Congratulations. Can't believe how fast you are getting."Using my fitness! I placed 3rd in my age group and dropped 15 minutes off my fastest half marathon time!" - Melissa B.