Ready to work those knockout abs? Get ready for 2 sweaty rounds of 6 minute-long core exercises that guarantee those "fighter" abs! To keep things even more challenging, we finish each round with a 30-second KO Abs burnout. Be sure to warm up [1] before this workout, and finish this session with your postfight cooldown [2].

If you love this workout, you can find more exclusive workouts with Christa DiPaolo [3] on 4-Week Full-Body Fusion [4] plan on Active by POPSUGAR.

On Christa: Terez [5] top and Carbon38 [6] leggings
On Meesh and Amanda: Outdoor Voices [7] outfits and APL [8] shoes