In Pause, Rewind, Nawaz Modi Singhania writes about the role of fitness, nutrition and good mental health in ageing well. She shares techniques she's developed over her years as a leading fitness consultant, including facial fitness exercises, muscle work, how to build the immune system and health-promoting foods.When it comes to lifestyle, the book talks of other factors that affect ageing, including sleep, hydration, stress, drinking, smoking, what's in your head space and heart space, and one's mindset-positive or negative.