An experiment said the tears you shed under different circumstances have different components! Do you know that?? When you cry because of sadness, your tears have an enzyme which is toxic in nature, but that enzyme can't be found if you shed your tears when you laugh too hard or when you cut an onion!! So when you are sad, don't mind shedding some tears to release some toxins from your body!!
Qing53 Yeah I agree .. shedding some tears can release some of the pressure that we hold inside us. But the problem sometimes that when you start you can't stop or is it just me?