Emphasizes the importance of continuous learning for cognitive reserve. Activities like learning languages, solving puzzles, or playing instruments keep brain synapses active and promote neuroplasticity, helping counter natural aging processes.

Adequate sleep is essential for both physical recovery and mental fitness. During sleep, the brain processes daily experiences, consolidates memories, and performs maintenance functions.

Social connections are crucial as aging often brings loss of social contacts. The book encourages actively preventing isolation by building new relationships and engaging in community activities.