Crunches will give you abs. Cardio is the key to weight loss. These are two of more than a dozen exercise myths that do more harm than good. Business Insider brought in three professional athletic trainers to debunk them.

Common Myths:

  1. Unused muscle turns into fat
  2. Morning workouts are better
  3. Stretching before a workout prevents injury
  4. You can target specific body parts
  5. Cardio burns fat
  6. Muscle weighs more than fat
  7. The scale measures progress
  8. Women get bulky when they lift
  9. Strength training requires a gym
  10. Crunches will give you a six pack
  11. The more sweat, the better the workout
  12. Sports drinks are the best way to hydrate
  13. Power-down protein post-workout
  14. Just keep going, no breaks
  15. No pain, no gain
  16. You’ll see huge results in 1 month
  17. There are good and bad workouts

Learn about the myths by watching the video at