How to Flex a Muscle While Stretching It, to Help Protect Joints
Yoga expert Jill Miller shows how to use active stretching or proprioceptive neuromuscular facilitation (PNF) in a runner's lunge to protect joints and build strength. From Jill's Yoga for Weight Loss Workout Kit by Gaiam. Read Jill's blog post about PNF and how it helps her stay both flexible and strong.
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