Just last November, John and I celebrated his grandfather's 100th birthday. Clifford lives a very active life - even at 100, so I'm sharing tips from his own life about how he invested in himself. From being active mentally and physically, to his daily routines and social habits… this is how you live a healthy 100 years. As we end season 5 today, I encourage you to keep investing in yourself so you too can live life to your fullest.