NEW Healthista 30 day challenge series has returned. This time round personal trainer and creator of the Healthista Fit Hiit app, Kelly Du Buisson, brings you the '30 Day plank challenge'. Each day focuses on three different planks in just as little as five minutes. This challenge will work your core, upper and lower body. Day three brings you a side plank, plank saw and a reverse plank. SUBSCRIBE NOW: https://www.youtube.com/user/Healthista Get more from the Healthista team here: ONLINE: http://www.healthista.com/ TWITTER: https://twitter.com/healthistatv FACEBOOK: https://www.facebook.com/Healthista INSTAGRAM: https://www.instagram.com/healthistatv/ PINTEREST: https://www.pinterest.com/HealthistaTV