Hello Wei Lin!
I do not care for plyometrics because I feel that it can eventually lead to possible bad back injuries! I herniated a disk in my lower back (L5-S1) when I was twenty-eight years old. It took a long time to fully recover from that! At almost fifty years of age (in about five weeks) I don't care to take any chances on messing my back up again!
Keep Blasting!
Sifu Lamar M. Davis II
Senior Instructor
Hardcore Jeet Kune Do
Sifu@HardcoreJKD.com
JKD@windstream.net
http://www.HardcoreJKD.com
Phone (205) 296-7070 (Incoming Only)
"Hit Hard, Hit Fast, Hit First - ALWAYS!"
"The REAL future of Jeet Kune Do belongs to US, the few, the proud, the HARDCORE! Now, what are we going to do with it?" _ Sifu Lamar M. Davis II