The founder of RunKeeper — a fitness app that's like a personal trainer that lives in your pocket, integrating with your phone's GPS, social-network, and music functions — Jacobs used to sell software for tech companies. But he quit that racket when he realized he could make a living combining his know-how with his passion.
"It actually took me a while to realize what I was passionate about, because it's so baked into the fabric of who I am," says Jacobs, a two-time Boston Marathon runner who grew up playing hockey and lacrosse. "I was literally training for a marathon, asking myself what I was passionate about, and fitness and healthy living were staring me in the face." One of the first 200 apps in the Apple store, RunKeeper got its start in 2008 as a one-man operation; now it's one of the most downloaded fitness apps.
For Jacobs, being the healthiest person you can be is the name of the game. "I'm not the best runner or the best at nutrition," he says. "It's more about overall healthy living. . . . I try to be balanced in all aspects of taking care of myself." The new dad — whose nine-month-old put "a tiny cramp in [his] workout schedule" — adds with a laugh, "Well, I probably don't do stress relief as well as I should."