I greatly appreicate all of ya's advice thank you, I do however have 1 question in which can easily be resolved and that is...
once your stomach is hard and ready for toneing do you know how many reps of sit ups should you do in a certain amount of time when your already on the advanced level?
once your stomach is hard and ready for toneing do you know how many reps of sit ups should you do in a certain amount of time when your already on the advanced level?
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