I like how sinic and critic you are regarding scientific litterature and research. You seem to have quite a bit of experience so I won't argue with you.
I must be studying for nothing I guess...
It's not at all a criticism of you. When one goes to graduate school in molecular biology, molecular medicine, etc., a big part of your studies is taking important research articles and dissecting them for their fundamental errors. Many are published and referenced every year in classes and textbooks, yet they are wrong. Almost every major series of articles has large flaws or errors, some because the experiments were bad to begin with and some because they made assumptions that were subsequently proven to be wrong. It's all about learning how to critique research for the flaws that result in major errors, whether in the experimental protocol or how they're interpreted. Unfortunately the news media don't have any idea how to evaluate what they read in scientific papers, so flaws get perpetuated. And in fields like exercise physiology, it's both a popular subject for the news and also an area where the research isn't all that well done.