Some examples: healthy joints by examining and addressing movement patterns and muscle imbalance; maintaining muscle mass through weight training and prioritization of protein consumption (including red meat); the importance of V02 max as demonstrated by 3-6x decreases in mortality; the implications of all this on reduction of cancer, Alzheimers risks, etc.
The difference between this book and all others I've seen is that, as a trained scientist with a mathematical background, Attia has a rare combination of MD training, a mathematical/scientific way of thinking, and a history of working as a consultant in risk assessment. All this provides a much needed framework to assess what is known in the space and use it to make practical recommendations for how to live - and how to asses new evidence as it comes in.
Much of it my not be new to you (in particular), but the book may provide important reasons why you would want to do these things. Motivation is a huge part of it.