Turn up the intensity

OK...so you are out there walking with your friends everyday, rain or shine and still no change in weight.  Are you chatting too much?  Not walking long enough?  Could be, but maybe you just need to turn up the intensity.  Never mind the fact you don't like to run (I hear that ALL the time).  You don't have to run....that's right....hit the HILLS!!!! Add them into your usual walk and turn the usual into a downright workout!!!!  Try it...what have you got to lose....except calories.