This ab workout itself is a real killer. It combines 1. Ab exercises and 2. HIIT movements (they burn lots of calories, bring the heart rate up and make us sweat) and no equipment is necessary, no breaks and not much space needed.
Simply just follow along, 30s for each exercise. Who would have thought you could do an ab workout and a HIIT session with someone like Jason Derulo!
Remember to also focus on working on your core as opposed to just following ab specific workouts to help enforce strength throughout your body that will help you in multiple exercises and scenarios.