Whether you are a guy or a gal, underarm perspiration can ruin your day in more ways than one. This added bit of moisture can leave its telltale signs of wetness and odor on your clothing and be embarrassing for you, particularly if you are at your place of employment. It can also dampen your mood, discouraging your natural smile from appearing and limiting your interaction with other people. You shouldn't let temporary incidents of sweating keep you from doing the things that you love. After all, it's natural to sweat, particularly if your environment is hot or humid.