The exact origins of National Swim a Lap Day are a bit of a mystery. Like many quirky holidays, it seems to have popped up as a fun way to celebrate the start of summer and promote physical fitness.

Mornings are busy at the Palm Desert Aquatic Center since it reopened last week, with people anxious to get back in the water for exercise. The city’s public swim center, which includes three pools, ...

Petra Kvitova took to the pool for some laps, presumably as part of a work out, but added a rather unusual accessory. The world No. 11 actually donned a snorkel for her freestyle swim. While she looks ...