I skimmed the article and it was interesting. I was more concerned by the links at the end of it which were definitely spam, and possibly malicious, as they went through to an ad tracker. It seemed very suspicious that the blog only contained one article and it was there to generate ad revenue, or send people to dodgy sites (and no, I didn't click through the ad links. I'm far too wary of malicious sites to do that.) Thank you for not replicating the links at the end of the article.
Many spammers join up only to post links to their site, either to sell a product or to drive up their search engine ranking. It's one of the reasons we're probably stricter with newbies than with people who have been posting here for some time. If some of your posts had not linked to this site I wouldn't have been so cautious.
To avoid plagiarism you need to cite the author and where you found it. That doesn't mean linking to it, it just means giving the author name, the date you read it online and the website. However, that does not keep you safe according to IP laws. Even if you cite the author you are infringing someone's copyright if you copy a substantial amount of their work. In this case I'm afraid that by copying all the text you are infringing copyright. The best way to avoid this problem is to summarise the article in your own words. It also means we don't have to read a huge essay before giving our opinion!
To avoid problems with copyright law I'm going to delete the text you posted, I hope you don't mind. I don't want to leave the forum open to legal problems.
If you are ever in doubt as to whether it's okay to link directly to a site you should advise readers to google the title. In this case if readers google 'Fighting Fat Forever' it will take them indirectly to the site in question. You see, someone else has joined various forums (taste.com.au, fat-forum.com and womens-health.com) in the last few days and has posted your exact same question with the same link. Oddly enough those sites have treated the posts as spam too, but some retain the link.