Helping people get fit will always be one of the most reliable business ideas.
If you’re a fitness buff and have the right combination of charisma and business sense, working as a part-time personal trainer as a side business idea can be both physically and financially rewarding. Once you build up a reputation and client base for yourself, it could easily turn into a full-time endeavor for you. Check out these tips to a successful personal training business by the American Fitness Professionals and this interview with several fitness site owners who are making a living online, from MonetizePros. Finally, I’d recommend taking this business idea seriously and actually devising a go-to-market plan that can let you hit the ground running with clients from day one.