Initial investment: $5,000

Expected earnings: $2,500 to $7,500 per month

Becoming a personal trainer is a good way to help people reach their fitness goals. You won’t find a hard and fast rule regarding what kind of certification you should get or even if you need any. That said, it’s generally recognized as a best practice to obtain some sort of certification to start working with clients in a gym.

Fitness training certification can come in as low as $400 and go up to a few thousand dollars. In addition to certification, you’ll need to pay for a website — or use a free Instagram account. Many personal trainers provide coaching services online and sell customized exercise and eating plans for additional revenue.

A person should budget $700 to $2,000 for initial certifications, $600 for a web presence and another $1,600 for liability insurance each year, said John Romanelli, physical trainer and founder of the fitness website No Bad Reps. It’s perfectly feasible to clear at least $6,000 per month in revenues with this type of business, according to Romanelli.

Romanelli is a fan of the free — but efficient — nature of social media. “It costs you nothing in terms of monetary value and it will allow you to get exposure outside of your sphere of influence. When used correctly, it can be a highly effective strategy at a minimal cost,” said Romanelli.

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