This is hard. Technology and screens are used a lot around here for education and homework. But we try to limit video games and goofing off to two hours per day.

My boys (12 and 14) don't particularly care to play outside any more, but if I take them out and engage with them, they can get a good hour of exercise. I also take them to the gym from time to time.

We're also big on board and strategy games, but again that usually involves one of us adults suggesting such activities.