I see a feet chart it is like every spot on your feet is like a switch on certain parts of your body, it will improve blood circulation. If a part of your body is not in good shape, massaging that spot usually result in a painful experience, but after that you will feel more relief.

Same thing for hands but hardly see any massage centre massage hands.

But remember not to have foot massage within an hour after meal, and don't wash your feet right after massage, instead cover it with dry towel or something.

Best find those that doesn't use those wooden stick, and uses hands direcly as wood stick are too hard and can sometimes hurt your delicate feet. Guys normally do better because they have stronger hands. There are many China Chinese Girls doing foot massage around my place, they wear uniform shirts, think they should be authentic foot massagers but anyone tried?

There are normally 2 types of pain, 1 is more like pain from the nerves, the other is physical pain, when you feel physical pain you should ask the massager to go more gently if not you will end up with bruises.