We spent last week at the beach in South Nags Head, NC. It was such a great time with my boyfriend's family. I kept up my running pretty well and even took my kettlebells out to the beach for some core work. Thats probably what I like best about them. Just take a 20lb KB out to the beach and do some swings, windmills, lunges, cleans, deadlifts, russian twists and one of my favorites, the crunch-to-situp.