It doesn't take a lot of physical activity to get fit and be healthy. In fact, a study showed that investing just a few minutes required to complete the below 7 minute workout is enough to increase cardiovascular endurance and muscular strength and endurance. Get the kids to join you and give it a shot. P.S. I do this with my kids all the time and we love it! P.P.S. There are a ton of great 7-minute workout apps that will cue you when to start and stop each exercise. Just search for the 7-minute workout in the app store.