This little 20 day body weight and kettlebell challenge will give your abs kick. For the next 2 and a half weeks its time to strengthen that core with a few planks and swings. Complete 10 workouts or push to begin a master be completing 20 works in 20 days. After a 5 minute warm Perform 5 single arm swing right side followed by 5 single arm swings left. Within 1 minute 1 minute high plank. Total time 20 minutes.