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...energy to maintain vital functions such as breathing, blood circulation, digesting food, and keeping warm) slows down naturally as we age. Slowed basic metabolism, in combination with age-related changes on our cardiovascular system (heart, veins, arteries, circulation of blood), immune system (how our body protects itself from infection and how it is supported to recover...

...energy Fight-or-flight response Our bodies assess whether or not a situation is stressful based on sensory input and stored memories. If the situation is judged to be stressful, the hypothalamus is activated. [Diagram of the brain with the hypothalamus labelled]Diagram of the brain with the hypothalamus labelled As Figure 1 shows, the hypothalamus in situated in the...

...energy to catch up again. When more work came I began to feel overwhelmed. Normally, I would have gone to Angelique right away but I just didn’t feeling normal and she didn’t want to be seen as a failure at work. Audio 1 Lakshmi’s perspective Angelique When Lakshmi’s mother died, I thought that she had coped with her bereavement in a calm and emotionally mature...

...energy at a level that step by step can be shared by 10 billion or 11 billion by the end of this century. I've never called myself an optimist. But I do say I'm the possibilist. And I also say the world is much better than many of you think. In the next section you’ll consider Hans Rosling’s views in more detail and consider whether you agree or disagree with...