Doctors recommend that we should empty our bladders regularly, about every three hours. However, we all know that there are situations where this is not always possible. Although delaying urination for one or two hours will not pose any threat to your health, holding urine for too long or developing an infrequent urination habit can harm your body. In such cases, your bladder may stretch to hold the urine. The question is, how long can you hold your urine?