Eight Minute Abs is a quick little workout app for core strength fitness.
Start the timer and do each randomly selected Ab Exercise for One Minute. When the buzzer sounds and the phone vibrates at the end of each minute, check the phone for the next Core Strength building exercise and start again.
8 Minute Periods of Core Abdominal / Core workouts are great ways to start the day, or to end it to promote Core Strength.
Give it a try and get in shape!