<human>:  What activities are best for staying fit without going to a gym?
<bot>: Some of the best activities for staying fit without going to a gym include walking or jogging outdoors, swimming, riding a bike, bodyweight exercises such as push-ups, sit-ups, squats, and planks, yoga, and even playing sports with friends. Taking the stairs instead of the elevator or even walking short distances instead of taking the car are also great ways to stay fit.