Then figure out where your target customers can be found—both physically and virtually. College students who need more income can be found on campus or on online forums or websites about learning to manage your money. Athletes and people who lead healthy lifestyles can be found at gyms and online groups or websites about running, yoga, healthy eating, and more.
As a last resort, you could try cold calling by phone. This is probably the most depressing and soul destroying activity on the planet. Even if you get past the usual questions such as ‘If you’re selling something – I’m not interested’ and ‘How did you get my number?’ you need a really slick and professional script and the ability to recognize and avoid lonely old ladies who just want to interact with someone, anyone, in fact.