The side plank exercise works your core, especially the muscles in your obliques. Once you’ve mastered the basic technique, there are many tweaks you can make to keep it challenging. Watch on for the move that will jumpstart your new year fitness resolutions. <br /><br />Subscribe to the Refinery29 channel: http://bit.ly/subscribe-to-r29<br />For the latest trends and videos, visit: http://refinery29.com<br />Like Refinery29 on Facebook: http://facebook.com/refinery29<br />Follow Refinery29 on Twitter: http://twitter.com/refinery29<br />Heart Refinery29 on Instagram: http://instagram.com/refinery29
