Tens machine is a small electrical device (runs on batteries) with small gel packs that you stick to your lower back. A bit like the Osim massage machine. It sends out small electrical pulses and when you feel a contraction, you press a button and the pulse gets stronger and it eases your labour pains. You will find info on it in various childbirth books and on the net. I read about it in a book and found out that my lactation consultant Mrs. Chee rented tens machines out. Used it for my 2nd and found it very effective, thought it better than gas which I thought was useless.
