We were quite an 'outdoorsy' family when the kids were younger - lots of country walks, playing in the garden etc but I'm aware that apart from the walk to school (about 25 mins each way) mine aren't outside a huge amount.
Also, if you feel the same as me, have you tried, with any success, to get them outside more? Mine aren't sporty types, so suggesting joining a football team would be the kiss of death.