Connie Green’s services have been in high demand lately. After all, her type of work — foraging — has recently caught the eye of thousands of restaurants in Canada and the U.S. She spends night and day thinking and collecting food from the wild, whether it’s mushrooms and leeks or elderberries and fiddleheads.

They study the putting greens, travel across the country, practice for countless hours and take meticulous notes on every course they play. That’s right, they’re professional miniature golfers — and they’re growing.

Anne Becerra, a New York City bartender, is part of a growing group of certified beer experts: Cicerones, the beer world’s answer to the wine sommelier. From serving Belgian beers in the proper glasses to picking the perfect food for the perfect pale ale, cicerones know pretty much all there is to know about beer.

Zack Hample, 33, belongs to a small but growing group of diehard baseball fans: Ballhawks. Some center their entire lives around catching baseballs from the stands. Hample holds the unofficial word record with 4,662.

Olympic racewalkers may garner a lot of confused looks, but they’ve grown used to it.