Advanced - 20 minutes - Amit Younger You need to be a member to watch this video. Learn more Work your core - front, sides and back, in only 20 minutes. You will feel strong and energized and ready to whatever life throws at you. 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.