Can holding in your stomach muscles all day be bad for you?
Not at all, in fact holding in your stomach helps exercise the abdominal muscles. You can work your stomach muscles this way at any time in your day, standing or sitting, which can help flatten your stomach as well as reminding you to keep a good posture. On top of these good things, working any muscles helps burn calories, and can be a good part of a regular exercise program.
Updated on Thursday, February 02 2012 at 10:23AM EST