If you are unfamiliar with any of the following exercises, simply Google them to see how they look.
Exercise 1: Medicine Ball Half Up Twists
Sets: 3
Reps:25
Rest: 30-seconds rest between each set
Exercise 2: Hanging Knee Raises
Sets: 3
Reps: 20
Rest: 30-seconds rest between each set
Exercise 3: Medicine Ball Leg Raises
Sets: 3
Reps: 20
Rest: 45-seconds rest between each set
Exercise 4: Prone Bridged Leg Lifts
Sets: 3
Reps: 1-minute
Rest: 30-seconds rest between each set