There are a couple questions needing edits to line them up with the scope defined within the FAQ. The questions here are some good questions that have been flagged as off-topic, and it would be nice if we could make them tie-in more directly with fitness/exercise.
I'll try to do my best to maintain this list with items as they get updated or come into focus.
What are BCAAs, and what are they used for? -- Thanks, @Greg!