WASHINGTON — At work, Pam O’Donnell types at her computer, talks on the phone and, every so often, bounces a bit on a big blue ball. O’Donnell has an office chair, but this doesn’t mean she uses it.

From Montauk to Nantucket to Maui, I’ve gotten to enjoy my fair share of inflatable paddle boards. Stand-up paddleboarding—also known as SUP—makes for a great exercise for novices and experts alike.

What does a BOSU ball do? According to an article published in the National Library of Medicine, balance training, “has been shown to improve not only balance but functional performance, as well.” ...

Pro surfer Billy Kemper takes part in an exercise routine with Kahea Hart, his trainer, and Ryan Hipwood, a surfer who is also preparing to surf at Jaws on Maui. On this day Kemper began his workout ...