6 common mistakes that slow your progress

I recently read this article on MSN.com and thought it was actually quite good - simple truths. It could've just as easily been titled "6 Ways to Improve Your Workout Results" to put a positive light on it. Check it out: http://health.msn.com/fitness/articlepage.aspx?cp-documentid=100234590 Then see how many of these little changes you need to make. Okay, for those of you too rushed to actually read the article, here are 6 things to do:

1) Stay hydrated. You'll burn more calories, feel better, and be able to go longer and harder.
2) Slow down and use good form when lifting.
3) Don't skimp on lifting in order to do more cardio. You need the lean muscle mass, bone density, and metabolic boost you get from strength training.
4) Listen to music rather than read while doing cardio. Readers tend to go slower.
5) Wear a heart rate monitor to see how hard you're working and monitor improvements.
6) Pick cardio, exercises, and activities you enjoy. Running isn't the only solution.