A simple and effective high-intensity ab circuit to strengthen and tone your core.
This 5 Minute Ab Workout has five sets of 1 minute ab exercises with 30 second rests between sets. Start by doing just one round a day -- and build up to two or three!
Circuit: 1 min - Crunches 1 min - Sculler sit-ups 1 min - Toe touches 1 min - Bicycles 1 min - Double leg lifts *30 second rest between sets
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