I go to the bathroom before I get in the water and immediately after the dive. (I refuse to urinate in my wetsuit.) How can I control this? I don't have a weak bladder or any form of incontinence.
The hormone that controls the production of urine by the kidneys is called antidiuretic hormone (ADH). It controls when and how much urine your kidneys make. The increased blood volume to the major vessels is interpreted by your body as a fluid overload. This overload causes ADH production to stop, which in turn allows the kidneys to immediately produce urine to lower the centrally circulating blood volume the body's automatic response to preserve blood volume. Once you exit the water, circulating blood volume returns to near normal-less the fluid taken to produce urine, which is quickly replaced as the body draws fluid from body tissues, such as muscles.
Unfortunately, you probably will also leave the water with a full bladder. Since we are all subject to the same phenomenon underwater, this is probably your normal response to immersion. If this situation causes problems like urinary tract infections, see your doctor.
If your coffee is caffeinated, you may wish to switch to a decaffeinated brand, as caffeine is a known diuretic that also interferes with the production of ADH.
This is interesting, as I have always suffered the same problem, as a diver. It's great to know it's normal and I now know who the wet suit "pee-ers" are. they are the ones not charging for the toilets after a dive.
Stop the refusal. Science says: pee in your wetsuit. Hence the wetsuit shampoo market. ;) Many people get urinary tract infection simply because they refuse to listen to mother nature. It is always useful to note the many effects entering water, (nevermind compression during diving) have on the body, i.e. lowering of heart rate, pupil dilation, hormonal releases etc
Well then... 50 dives and he refuses to wee in his wetsuit.... we go back to the 3 categories about this: the ones who do (I've doing it for ever, and infact it also happens during swimming sessions, so unlike many people believe, this natural reaction of the body is not related to depth or pressure), then the ones who lie.... and our friend here is one of the "ones who will".... Why make a fuss and suffer from a perfectly normal and natural situation...
I drink lots of water and pee in my wet suit. In fact it's like I have to go. Plus it gives you a nice warm feeling when the water is cold.%uD83D%uDE1C
Not in a dry suit. Interesting
Thanks for this string of comments and contributions! Pool hygiene issues aside - it is definitely better to urinate in the wetsuit than hold it in! Apart from the discomfort, irritation of the bladder and prostate, and increased chance of urinary infection, there is another danger: People often deliberately deny themselves fluids and dehydrate themselves to avoid urinating in their wetsuits. This is very, very unwise, as it increases the risk of decompression illness significantly. In fact, DAN is actively busy with a "More water less Bubbles" campaign to try to offset this tendency! We offer our apologies to pools and wetsuits in advance! Check it out on: http://www.dansa.org/more-water-less-bubbles.htm. Safe Diving! DAN Medical Team