Question

How many crunches per day for flat stomach?

Answer 1

Answer:

If you want to do crunches as part of your workout routine, stick to a moderate amount like you would with any other exercise — three sets of 10 to 12 reps is generally sufficient. Vary your crunches by doing bicycle crunches, reverse crunches and oblique crunches to hit multiple muscles

Explanation:

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Answer 2

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