Editor's Selections: Exercise, M&Ms, Octopodes

Here are my Research Blogging Editor's Selections for this week:

• Dr. Sharma asks, at his eponymous blog, what are the psychological effects of exercise on adolescents?
• M&Ms as a strategy to overcome fear of dogs. No, really. Neurocritic has the details.
• Doctor Zen writes, "We're smart. Octopuses are smart. But we have different kinds of smart." Learn about it: Hand-hand-hand-hand-hand-hand-hand-hand-eye coordination.