Remember the Tin Man in the Wizard of Oz? His body hadn’t been used in so long that he was stiff, inflexible and barely capable of moving … that is, until Dorothy fixed him up with a few squirts of oil.
Well, like the Tin Man, your body, too, can “rust” and get stiff if you don’t use it. This can manifest not only in your joints and muscles, but also in your internal organs. After several decades of misuse or neglect, your body may begin to manifest signs of illness or even start to shut down.