1. Personal Training Business: Provide one-on-one and small group training sessions to help clients reach their fitness goals.

2. Online Fitness Coaching Business: Provide fitness coaching services, such as nutrition and fitness advice, over the internet.

3. Online Workout Program Creator: Create and sell customized online workout programs tailored to the needs of individual clients.

4. Fitness App Creator: Develop and market fitness apps that users can download and use to track and monitor their progress.

5. Fitness Blogger: Create a blog covering fitness topics and use it to promote products or services related to fitness.

6. Fitness Event Planner: Plan and coordinate fitness events, such as workshops, seminars, and retreats.

7. Group Fitness Instructor: Teach classes such as yoga, Pilates, and spinning at a gym or studio.

8. Online Personal Trainer: Provide online personal training services such as diet and exercise plans, nutrition advice, and progress tracking.

9. Fitness Equipment Retailer: Sell fitness equipment such as treadmills and exercise bikes.

10. Gym Owner: Create, develop, and manage a local gym or fitness center.