Online fitness products

My business specializes in online fitness products, and I need content to help market them. Specifically, I'm looking for material about a weight loss and muscle gain and fasting programs. I have some specific keywords and phrases in mind that I would like the content to focus on, and I am happy to provide these. Finally, my target audience is the general public. If you think you can help me craft quality content to reach this audience, please get in touch.