I don't really know much about fitness niche but I think it's something a few people would like to get into. But here, I'm not sure if it will get a lot of traffic because most people are too busy to exercise.I feel like these days, fitness is huge and possibly one of the biggest niche's to get into to. Is it worth getting into such a big niche though? Or would you rather find a smaller niche on the corner of the web somewhere?