The Dos, Don'ts, and Variations for Lunges Learn proper form for static lunges without hurting the knee as well as mistakes that can cause knee pain and problems.
Original article and pictures take http://exercise.about.com/od/lowerbodyworkouts/ss/howtolunge_3.htm?utm_source=pinterest&utm_medium=social&utm_campaign=shareurlbuttons_nip site
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