Yikes! After the New Year’s Day Alcatraz swim I remember seeing this guy who was really shivering. He seemed pretty out of it and was shaking uncontrollably. I just found out that he was so hypothermic that he actually ‘lost his sight’ for a period of 3 hours after the swim. I’m told he is fine now. I’ve never heard of this happening before, but it is a reminder that cold water swimming can be very dangerous.
Swim within your limits.