Sit ups.: Sit ups, and variations of them, are a great way to build your abs in a month or two. You may want to consult a fitness pro, to show you these, and how to do them correctly.
Answered 3/21/2014
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A doctor has provided 1 answer
5 doctors weighed in across 2 answers
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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