Get out an enjoy the nice weather. Power Walking is low impact, requires no equipment except good walking shoes. it also can be done anywhere. Cycling is also low impact, works the legs and butt. Enjoy the different scenery or even join a bike club and meet new friends. Nice weather calls for a run. Running high caloric expenditure, requires no special equipment, and can be done anywhere. Just remember to stay hydrated. You can also change your pace with a little cross-training. Try running up stairs. It is a total lower body workout, builds stamina, and has a high caloric expenditure.