got! nowadays, more and more xmms go to gym. there must be
some around even in neighbourhood gym, unless your neighbourhood is
those old town full of old people.
n usually, most people have a fixed schedule for gym... they
will go on certain days, and if possible at a fixed timing for
consistency. so u can start stalking your xmm. 
You are right, my neighbourhood is full of old people.
I thought you know where i lived?
Aiya i already prepare to go PTP phrase for ns.