Reaching 40 can seem like a life-threatening milestone and many people take it as a cue that they're now naturally destined to be fat and unfit and lose their health without medication.The truth is that most of the problems come from lifestyle accumulation rather than age itself so let's figure out the key areas and what we need to do to stay lean, fit and healthy well beyond 40!Do I really need to gain this body fat?How should I train if I struggle for time?What should I focus on?How can I know if I'm on track for heart disease and metabolic problems?Where should I start in making changes as it seems a bit overwhelming?