A health blog is a website that gets updated regularly. These updates can be done every day or once a week, but the topic is more focused on the fitness industry. There are several niches in fitness, so a blogger may choose to focus on the following areas:  bodybuilding,  work out plans and diet programs. in short, one can say that blogs available on the internet are quite helpful in letting people what is wrong and what is right in concern to their health and beauty.