Intermediate - 20 minutes - Amit Younger You need to be a member to watch this video. Learn more This class is focused on strengthening your core and trunk muscles- front, side and back. Prepare to work hard and feel great in 20 minutes. Share DownloadClick here to learn about watching videos offline on your mobile devicesPlease click this link to confirm you want to download this video. It will be taken from your monthly allownace.