"You swim very good," he said.
"Thanks, I've been swimming laps for many years," I replied.
"You swim for a long time. You don't get tired?"
I wanted to reply, like Shelley Winters in The Poseidon Adventure, "In the water, I'm a very skinny lady." But I wasn't sure he'd get the reference, so I said something like "I weigh less in the water, so I can go a long time, and it's better for my joints." He gave me a big thumbs up with both hands.
I do really like our gym--people are very personable. Except when they hog the good jets in the jacuzzi.