Lace up your skates and take a spin — or two or three — around LeFrak Center at Lakeside’s spectacular 16,000-square-foot rink as you gaze at the beauty around you, including Prospect Park Lake, Brooklyn’s only lake. If you work up an appetite trying to stay upright on your skates, you can refuel rinkside at Bluestone Cafe, which offers sandwiches and burgers as well as healthy snacks and soft drinks. For those age 21 or older looking for a little more zing, Bluestone also offers a selection of beer, wine and cocktails. Grab a friend, your partner or the whole family for some fun, healthy, outdoor action roller skating by the lake in Brooklyn’s Prospect Park.