I have red lines across my stomachs?

Okay so whenever I sit down I end up having one red line across my stomachs and then one paper on right above it. I feel really embarrassed about it I don’t think it looks good. What’s weird is that I’m not overweight I’m 5’4 and 112 ibs. And like when I have gym at school and I’m in the locker room all the other... show more Okay so whenever I sit down I end up having one red line across my stomachs and then one paper on right above it. I feel really embarrassed about it I don’t think it looks good. What’s weird is that I’m not overweight I’m 5’4 and 112 ibs. And like when I have gym at school and I’m in the locker room all the other girls have flat stomachs. Do I get these red lines from my poster (I’ve been told I slouch a lot). Or does it mean I have excess stomachs fat?
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