Publisher
Tvolve A handy fitness trick is to press your tongue against the top of your mouth while you are doing crunches or situps. This engages your neck muscles and keeps them aligned properly while you are exercising your abs. This will help you avoid overworking your muscles and potentially injuring them.
Read More===http://www.thehealthvictory.com/tvolve/
5 out of 5 from 1 reviews