Yes, personal trainers in Florida typically require a business license to legally operate their fitness training business. The specific requirements and process for obtaining a business license can vary depending on the city or county in which you plan to operate your business. Here are some key points to consider:

1. City/County Licensing: In Florida, business licenses are often obtained at the city or county level. Contact the local government offices, such as the city clerk's office or the county's licensing department, to inquire about the specific licensing requirements for personal training businesses in your area.

2. Occupational License: In some cases, personal trainers may need to obtain an occupational license or a professional license specific to their field. This license ensures that you meet certain standards and regulations related to your profession. Check with the appropriate licensing agencies or regulatory bodies to determine if any specialized licenses are required for personal trainers in your locality.

Remember that licensing requirements and procedures can vary by location and can be subject to change. It is essential to check with the relevant local authorities or consult with a business attorney or professional familiar with Florida's regulations to ensure compliance with all necessary licenses and permits for your personal training business.

Check out the Florida Board of Athletic Training for more information.