This Blog is maintained by Master J. R. Roy. His students call him Sifu [Sea-Fu]. This blog is designed to journal the material that Master J. R. Roy practices and teaches. **DO NOT ATTEMPT ANY OF THESE DRILLS, EXERCISES OR APPLICATIONS WITHOUT CONSULTING A PHYSICIAN AND HAVE A QUALIFIED INSTRUCTOR PRESENT - **All material is copyright and all rights reserved worldwide
Tuesday, October 21, 2025
Muscles secret chemicals and proteins when you contract them!
