Your brain rewires itself until death. For decades, scientists believed adult brains were fixed. Wrong. Studies show London taxi drivers grow larger hippocampi from memorizing 25,000 streets. Stroke patients regain function by forming new neural pathways. Eleanor Maguire's research proves: intensive learning physically changes brain structure in 3-4 months. You're not stuck. Every new skill, habit, or thought creates new connections. The catch? It requires consistent practice. Your 60-year-old brain can still learn languages, instruments, anything.