Wah, you think can meh? Unless the person got some brain
problems or spinal cord problems, will they only have exaggerated
reflexes in the first place... otherwise, it's quite normal... the
easiest to do is the knee reflex... feel the hard bone which can
move around, that is your patella... u have to sit straight up and
hang your leg over the couch, let it move freely (the examination
bed in the clinic as you may have seen)... u need to relax... then
locate the bone, and the tendon is immediately below the patella
bone... hit it gently and you will see the reflex...
Another way is to sit on a chair and cross one leg above the other
tightly. Try to keep it as parallel as possible, both the legs in
position... relax and repeat the procedure... 
