1 as people continre to grow and age ,our body systems continue to change,at a certain stage in your life,your body system will begin to be weaker ,your joints may become stiff it may become more difficult for you to see and hear
the slow change of againg carses our bodies to lose some of their ability to recover from disease and injury
in order to live longer ,we have always tried to slow or stop this process that leads us to ward the end of our lives many factors contribute to your health a well -balanced diet plays an important role
the amount and type of exercises you get is another factor
your living environment and the amount of presure you are under is still another
but scientists studying aging want to know:why do people get old
they hope that by examining the aging process on