Answer:
it would kill you
Explanation:
First stage: shivering, reduced circulation;
Second stage: slow, weak pulse, slowed breathing, lack of co-ordination, irritability, confusion and sleepy behaviour;
Advanced stage: slow, weak or absent respiration and pulse.
Answer: You would start to experience slight/moderate hypothermia, and probably catch a cold later on
Explanation:
The reason you would get a cold is not necessarily because cold has germs in itself, but because cold weather makes viruses proliferate way quicker and survive your immune system. And you would start to experience hypothermia because your body is trying to heat itself in minus temperatures, getting you in a state of shock if exposed enough, and 30 minutes in a wet swimsuit would be enough to get you pale and slow your nervous system down, luckily this usually is not enough time to experience frostbite.
