Hi,
It is my pleasure to send my proposal to you, referring to your project details, I have the exact experience you want, here is my sample of the same topic you want:
fatreductionpro.com.
Just try these keywords in google: "how to lose upper body fat" and "six pack abs facts", "abs facts", "facts about abs"
You'll see that my articles are on page one at google in the hardest niche with strong competitors.
I can write in the topic you want.
I can do seo optimizing to your website, so you can ensure that it will get the traffic you want.
Look forward to hearing from you.
Regards.
Hustaw.