What' s the longest amount of time you have gone for without relieving your bladder either because you had to or just wanted to see how long you could for the hell of it ? I have at numerous times emptied my bladder just before bed time & not emptied it for over 10 hours later even if I have a drink of water just before I go to bed. Is this ok health wise ? I don't do it all the time - just the odd time to challenge myself from not peeing for several hours at a time. Sometimes I have lasted for nearly 11 hours until finally giving in & having to empty it.