Peter Attia, M.D. on Instagram: "How older adults can stop muscle loss | Rhonda Patrick, Ph.D. This clip is from episode # 369 of The Drive which was released today (10/20/25). In the full episode, we cover: -How protein requirements evolve with age, activity, and goals, and why building muscle early is critical for long-term health -The connection between protein intake, mTOR, and longevity, and why fears around activation are largely misplaced -Why creatine’s cognitive effects may be as import