Old age begins in the mid-60s and lasts until the end of life. Many people over 65 have retired from work, freeing up their time for hobbies, grandchildren, and other interests. Stamina, strength, reflex time, and the senses all decline during old age, and the number of brain cells decreases as well. The immune system becomes less efficient, increasing the risk of serious illnesses such as cancer and pneumonia. Diseases such as Alzheimer’s disease that cause loss of mental function also become more common.
Mark enjoyed going to work everyday. He knew that he was at his physical peak and liked to run marathons and participate in martial arts. Jim retired last year and is having fun traveling around the country and golfing with his friends. Sometimes Jim has trouble remembering where he left his keys. His doctor has warned him to be careful about being exposed to to the flu or even a cold.
Who has more time to persue their interests?