The amazing thing is that it had nothing to do with my sailing or any of the sport and exercise I do. The hypo was at 11pm after a normal days work, with only a little exercise that afternoon. My wife injected a glucagon shot, a good thing to always have on hand, bringing me round long enough for the medics to do their stuff. After a lot of debate my wife and I came to the conclusion the hypo was caused by trying to be too strict with my blood glucose levels. If you always keep very strict medium to low levels there is no reserve of glucose in your body, which will eventually catch you out and believe me you do not want to go through what I have.
Luckily things heal, but it was a frightening experience.
Lindy and I are renovating an old cottage with a beautiful view of the ocean, so I am as active as ever. I take four shots a day three of fast acting Humalog and one of long acting Protophane for overnight. Taking lots of small amounts of insulin you feel like a bit of a pin cushion, but it is much easier to keep good even levels. I test my blood glucose level about two to three times a day and never go to bed without taking a level. As in control as you may think you are I think it is really important that you know your level before going to bed.