有玩開Gym的ching ctse入o黎揮揮手

Gary

I try to TRX.  I found that I have same problems with you (weak  core muscle).  I can do machine upto 15 -20 rep.  However, It is difficult for me to 10 rep for TRX.  TRX is very difficult.  I want to challenge it. It can train my core muscle.  I plan to add TRX in my trainning