Once upon a time, in a small town called Healthville, there lived a woman named Jane. Jane was known for her radiant energy, always being on the go and never missing a moment to live life to the fullest. But, one day, Jane started noticing some peculiar changes in her body. Her heart would race, she felt warmer than usual, and she lost weight without trying. She decided to pay a visit to the town's wise doctor, Dr. Knowitall, to help her understand what was going on.