24. Popcorn

A fun and guilt-free way to add fiber to your diet is eating popcorn. Popcorn is a whole grain that is rich in insoluble dietary fiber which adds bulk and weight to your stools, making them easier to get rid of. So nuke a bag of this movie-time snack when you feel like it but, make sure to hold-off on the butter and salt, as eating too much of those can cause other health problems.