Question: how many days can a person go without urinating?
Answer: When nature calls, it's generally a good idea to obey when convenient, but by knowing your bladder means you could go longer than you think without a wee. The bladder holds 400-600ml of urine. Normal urine production is around 1.5 litres every 24 hours, so that would give you nine or 10 hours to completely fill up.