Entrepreneurs looking to enter a new but proven marketplace can invest in a Jamba Juice franchise. The San Francisco-based health food chain boasts 440 locations nationwide offering an array of juices and smoothies. Although primarily located in warm climates, Jamba Juice franchises are starting to turn up everywhere as investors try to grab their share of an industry nearing $1 billion in worldwide sales.

A Jamba Juice franchise caters to health conscious consumers by stressing the nutritional benefits and the antioxidants that help prevent illnesses. Each smoothie features a blend of three to six fruits per serving. The colorful beverage is served cold and it's just starting to gain a presence in areas with inclement weather, primarily around the East Coast. Jamba Juice franchises are also expanding internationally.

Qualified and ambitious people can purchase an existing or new Jamba Juice franchise. They are available as standalone shops, or in non-traditional commercial locations like colleges and malls. Jamba Juice franchises in non-traditional sites require less strict rules for operation. However, you still need be comfortable with high volume sales and working with a national brand that demands solid business management from their franchisees.

While you don't need experience to own a single Jamba Juice franchise, the rules change if you have the capital to open a chain of locations. The corporate offices require significant experience in food service or retail industries. You must exhibit significant success in your prior work over a five to seven year span.