all people lose height to a greater or lesser degree due to aging, injury or other factors. guys who used to hang upside down could stretch out a full 2 inches when they decompressed their spines. in my own case i stood a whopping 68 and a quarter inches off terra firma when i was in my forties at 63 i a whopping 66 and 3 quarters inches good god. look at billy superstar graham he was around 6 ft 3-4 inches i doubt that he is 6 foot anymore.