You hear guys say it all the time: "I used to bike/ski/paddle/travel; then I had kids." The notion that becoming a father means giving up sports and adventure may sound reasonable—There's just not enough time!—but it actually removes the factor most likely to spur your children to grow into active, healthy adults: your example. A 2010 study by the nonprofit Outdoor Foundation found that 75 percent of kids aged 6 to 12 who participate in adventure sports are simply copying their parents. Which means your first act as an awesome outside dad is to walk out the front door. Then what? Follow these six steps.