Feel the burn! Try this at-home work out that targets arms and abs

Fitness instructor and founder of KKSweat Kara Liotta joins TODAY to share an at-home arms and abs workout that helps strengthen your core and improve posture. Plus, how to use a medicine ball to get the most out of your workout!  NBC News Health

​Fitness instructor and founder of KKSweat Kara Liotta joins TODAY to share an at-home arms and abs workout that helps strengthen your core and improve posture. Plus, how to use a medicine ball to get the most out of your workout!