Let’s talk science here. There are lots of fitness trainers and instructors out there who rely on pseudoscience far too often when devising their routines and programs. What’s the best way to lose fat? How does metabolism work? What’s good and bad to eat for this and that? Gerald Willis is a neurobiologist and obesity researcher who specializes in these things. These are evident in his blog Tough Slam. Even if you’re strictly looking for a fitness expert, you shouldn’t skip over this one. His blog posts and articles lean more toward the scholarly side of discussion, but that’s a good thing.