As someone who lives in Prague, I have a recommendation for you: NEVER jump into the Vltava (the river). It's a very bad idea. You'll drown or get hypothermia before you can swim to shore and die. 4/5 of the people pulled from the river are foreigners. Last year, it took two weeks to find the body of a Brit who jumped into the river from a boat after game of truth or dare with his his friends. :-/
As someone who lives in Prague, I have a recommendation for you: NEVER jump into the Vltava (the river). It's a very bad idea. You'll drown or get hypothermia before you can swim to shore and die. 4/5 of the people pulled from the river are foreigners. Last year, it took two weeks to find the body of a Brit who jumped into the river from a boat after game of truth or dare with his his friends. :-/