Stress and worry can weaken our immune system, causing headaches, stomach problems and poor sleep. They can make us feel tired, less happy and more likely to catch diseases by lowering our body’s defenses. Class 8 Science Grade 8 Chapter 3 ...
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Stress and worry can weaken our immune system, causing headaches, stomach problems and poor sleep. They can make us feel tired, less happy and more likely to catch diseases by lowering our body’s defenses. Class 8 Science Grade 8 Chapter 3 ...