Ooo-la-la

Oh lordy.

I have a good friend who swears this happens to her every time she's on the treadmill. Her treadmill is kind of cheap & vibrates a lot. :eek:
 
Dear god, I wish that were true with me. :( ;)

I knew a woman once who swore this happened to her during calf raises. weird.

Allison
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http://www.picturetrail.com/allisonj90
 
It could happen, if you're squeezing the right muscles (those of the pelvic floor).

Even with calf raises, I suppose if someone is tensing the wrong muscles (pelvic floor again), it could happen. Especially with high-rep work like ab and calf work. (Though on calves, especially, it suggests the person isn't isolating the right muscles!)
 

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