Is it effective to work out your abs by flexing them throughout the day? - Quora

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This Quora thread is awesome! : r/lifehacks

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What is the psychology reason behind guys who always show their abs and muscles on his Instagram? - Quora

Can a man have visible six pack abs if he has no body fat at all but still not be able to see his stomach muscles? - Quora

How to start working out to get abs - Quora

4 Ways to Flex Abs - wikiHow

Can you flex your abs? - Quora

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