Can be much fun. It's pretty simple. I believe you have a platform for people in your locality. Ask them out for the workout and mutually agree in a day and time. Make arrangements for refreshments and get your kits (sport wears) ready. And you're good to go. Another easy way around it is to sign up your very close friends and family on steemit. That way you are sure you people are geographically in proximity, then arrange a workout on a good day with them, u can arrange customized Steemit jerseys or tshirts for the sports. That way you'll be promoting Steem along with your exercise.