I'm a clinical research scientist (a PhD in neuroscience & 2 Master's degrees, 1 of which in human physiology & performance) and a reviewer of a respected medical journal. Yes, I review clinical manuscripts! I've been publishing articles in clinical journals since 2007. My expertise is in human physiology, exercise physiology, fitness in young and older adults. THIS IS WHAT I DO. I only work with real human subjects and have more than 10 years of experience in the field. Health & fitness articles are absolutely in my comfort zone. Don't settle for writers with lesser qualification & credential. Keep in mind you get what you paid for!