The two you mentioned could have an effect. Also, the increased bloodflow from your heartrate being higher could cause that.
2006-08-31 08:15:40
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answer #1
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answered by emily_brown18 6
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Your nipples are rubbing against your shirt. Try one made for running.
2006-08-31 15:43:55
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answer #2
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answered by Robert S 6
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I think it has something to do with the adrenaline that your body releases when you are doing physical activity. Hormones do all kinds of crazy stuff to your body.
2006-08-31 15:20:12
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answer #3
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answered by *~HoNeYBeE~* 5
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try this---rub your finger on your nipple and see what happens--it gets hard so I would guess friction agaist the shirt
2006-08-31 15:18:25
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answer #4
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answered by daanzig 4
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Probably movement and friction.
2006-08-31 15:15:24
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answer #5
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answered by green is clean 4
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that's weird. Probably because it's chilly outside and in running they are the first to meet with the cool air.
2006-08-31 15:14:09
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answer #6
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answered by sophieb 7
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my guess would be the friction. either that or it being cold outside.
2006-08-31 15:16:24
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answer #7
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answered by whateva 2
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your body temperature increases the weather is cold and there you go !!!!!
2006-08-31 15:14:43
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answer #8
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answered by Anonymous
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Maybe jogging turns you on...lol
2006-08-31 15:14:29
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answer #9
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answered by N M 3
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friction - try a sports bra with a racerback... that should help stop it
2006-08-31 15:17:21
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answer #10
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answered by Jenessa 5
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