It costs a lot, needs practice, and even if you do everything right you're often left with a chemical smell and water that stings your eyes. I spoke to a pool ... saltwater pools still use chlorine.

A chlorine rash is a reaction to chlorine, which is often added to pool water to help disinfect ... parasites that live in bodies of fresh or salt water. These parasites are released from snails ...

There is no better feeling than going for a swim on a scorching day – whether it’s a quick splash in the pool or a dip ... best backstroke, the chlorine or salt water you’re swimming in ...