If you wish to know about and practice you can visit www.crystallotus.com under alternate healing systems, acupressure, mudras will explain clearly.
The Acupressure, mudras are the one that cure your body and health problems. By massaging these parts the inactive nerves be activated and the blood circulation will to the parts will be sufficient and if there are any problem in the part or organ will be solved. I am doing this mudras and acupressure practice by going through the websites available on the net and got benefitted. Try and feel good.