Stable income: Somewhat stable

As a fitness coach, the income potential can vary widely based on factors like location, specialization, and marketing efforts. Online research suggests that while some fitness coaches earn consistently, others experience fluctuations in income due to client retention and market demand. Setting up costs range from purchasing equipment to certifications, with profits typically starting to come in after 2 weeks to several months, depending on how quickly you attract clients. Overall, I'd rate it a 3 out of 5 because while there is a decent baseline for income, it can be unreliable at times, making it a moderate stability option.