“Ignite by SPRI 900 Calorie Burn” S:1 E:3 Hard Core HIIT

S:1 E:3 Hard Core HIIT Who doesn’t want flat abs? Planks, bridges and butterfly sit-ups are the “core” of Ashley’s thrid workout. Divided into three sections, this program is designed to strengthen your midsection, trim your waist and, yes, kill more calories.