Unusual...: It may be related to activities you are doing together... Such as situps for example. If you guys do situps together with off form, you can cause this. It also may be related to how you sit watching tv, hydration, or vitamin deficiencies as you most likely share the same diets. I hope this helps!
Answered 1/31/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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