Tight hamstrings! this yoga sequence will loosen those right up
 

http://img-s-msn-com.akamaized.net/t...6&q=60&o=f&l=fYou're **t alone. Tight hamstrings are as common as having to wear glasses, but you can do something about it. Stretching regularly actually does make them more flexible, and this sequence is all you need. As a bonus, it'll target the muscles in the lower back and hips as well. Complete this sequence once with the right leg and then again with the left.

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