>Within the first five seconds your body goes into shock; it’s very difficult to breathe.
Both of those things. It's a horrifying feeling. Your arms and legs go numb almost immediately. Every time you move your arms and legs it feels like they weigh a ton. I was only in the water about 5 minutes then around 0-1°C. I couldn't imagine swimming a kilometer like that.
I've also done swift water rescue training in freezing rivers. We wore dry suits for that. But you feel it even in the dry suit.
>Within the first five seconds your body goes into shock; it’s very difficult to breathe.
Both of those things. It's a horrifying feeling. Your arms and legs go numb almost immediately. Every time you move your arms and legs it feels like they weigh a ton. I was only in the water about 5 minutes then around 0-1°C. I couldn't imagine swimming a kilometer like that.
I've also done swift water rescue training in freezing rivers. We wore dry suits for that. But you feel it even in the dry suit.