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Nitric Muscle Fuel A helpful tip you should keep in mind is that, as you do crunches, you should press your tongue against the roof of the mouth. Holding your tongue this way engages the muscles in your neck, and this keeps them properly aligned while you exercise your abs. By doing this, you prevent straining in a harmful manner and other accidental injuries.
Read More==========http://www.musclehealthfitness.com/nitric-muscle-fuel/
Read More==========http://www.musclehealthfitness.com/nitric-muscle-fuel/
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