http://AskTheTrainer.com/lunge-exercise.html
Personal Trainer Mike Behnken, MS, CSCS
Lunges are by far the best legs and butt exercise as the injury potential is far less than squats.
With lunges you can include upper body exercises to work a large percentage of your total body muscle mass and coordination.
Top 10 Reasons to Include Lunges in Your Workout Program
10. Elevate your Metabolism
9. Help Improve your Balance
8. Increase Strength of Legs & Glutes
7. Save you Time
6. Allow you to Work your Upper and Lower Body Simultaneously.
5. Safe & Effective Low Injury Potential.
4. Take up Very Little Space
3. Functional Strength
2. Largest Muscle Mass Worked
1. They Work
http://AskTheTrainer.com
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