http://www.tennisspeed.com/

[markus_vafaan]

Hi,

This site (http://www.tennisspeed.com/) claims that these exercises are the very best to increase serve speed and groundstroke speed... their products are the tenni speedchain and the torso burner.

Have John ever heard of this? Thoughts about these products?


Cheers / Markus

[johnyandell]

Never heard of them and no thoughts.