Relaxation, which is important for good flexibility.
- 17 Stretches You Should Know
- PNF Lower Extremities D1 & D2 - Ask Doctor Jo
- PNF Stretching For Your Calf Muscles - Kinetic Health
Brian Abelson has a bunch of good videos.
- source - recommends a 15 second hold, 15-20 reps/exercise, 5-7 days/week.
- Pretty technical
- Google Directory: Fitness: Flexibility
- Also check out https://www.stadion.com/?s=stretch+yourself+24
- Principles and Guidelines
- For runners
- A doctor's opinions, and general stretching ideas.
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