HONG KONG-SWIM-LIFESTYLE-ENVIRONMENT-HEALTH

In this picture taken on June 2, 2017, elderly men perform Tai-Chi (R) while looking out at an outlying island commuter ferry as they stand below the "Sai Wan swimming shed" before swimming off the western tip of Hong Kong Island. Hong Kong's Victoria Harbour is one of the world's busiest ports, but every morning daring elderly swimmers dive in to its choppy waters against a teeming backdrop of ferries, cargo ships and fishing boats. / AFP PHOTO / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP via Getty Images)