Not sure if you should hit the elliptical or jump straight on to the weight bench? Confused about whether or not you should lift on the same day as a run? You're not alone. Let's take a deep dive into the research and determine what to do and when.

Read the transcript at http://www.quickanddirtytips.com/health-fitness/exercise/weights-vs-cardio-keep-them-separate-or-combine

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