Remember, to be successful, people will trust your content and the only way this can happen is if you add value to their lives. Choosing a specialty as a fitness influencer is the easiest way to become an expert at what you do. You can choose aerobics, yoga, body building, or simply provide information on your personal journey to becoming fit. Once you’ve chosen a niche, keep posting regularly so that your audience will expect regular posts. This will give you a chance to build credibility while testing your style.