We know exercise has physical and mental benefits, yet it remains a challenge for many of us to prioritize. Between assignments, appointments, and annoyances, it’s difficult to find time for working out. A 2022 study reports that 28% of adults in America meet the physical activity marks to support aerobic and anaerobic fitness. The lure of watching TV, scrolling on social media, drinking, eating fast food, or smoking to offset the responsibilities of home and work is strong.

We touch a dangerous element every time we choose to swim. It’s not an idea we want floating in our heads when swimming in ponds, pools,...