How many times a week do you need to work out to get in shape? If you're trying to lose weight, should you focus on exercise or diet? Is it better to hit the gym in the morning or at night?

Whether you want to tone up, slim down, or simply boost your mood, you've likely come across these questions, but the answers may have seemed either contradictory or too vague to be helpful. On top of that, dozens of fitness myths plague the wellness world, making it tough to separate fact from fiction.

Fortunately, exercise scientists and physiologists have been researching all of these topics too, and the emerging research from their work can help you dispel the myths and hit the track with confidence.

Words by Erin Brodwin at Business Insider

[Photo via @victoriasport]