Aging Boomers Become a Business Idea Goldmine The active aging population holds numerous opportunities for entrepreneurs who can fill a niche.

Baby boomers are hot--and not just because of their well-defined biceps. This generation is 78 million strong and their interest in an active lifestyle is creating a boon of business opportunities for entrepreneurs. In this economy, "the timing is perfect," says Colin Milner, founder and CEO of the International Council on Active Aging. "Boomers are looking for organizations that can address their needs more specifically and they're not finding them. Because of that, those that are entrepreneurial are creating them."

Milner, who has been active in the health and fitness industry since 1982, has witnessed the growing accommodations for baby boomers--and he says the trend is here to stay. "Research shows you're never too late to start a physical activity or fitness program," he says. "It doesn't take a rocket scientist to figure out, 'If I'm going to grow my business, I have to start looking at the baby boomers.'"

10.5 million health club members in the U.S. are 55 and older.