Final answer:
Obesity is the chronic disease related to a lack of physical exercise.
Step-by-step explanation:
The chronic disease related to a lack of physical exercise is obesity. Obesity is a condition characterized by excessive body fat, often caused by a combination of genetic, environmental, and lifestyle factors. Lack of physical exercise is a major risk factor for obesity as it leads to a calorie imbalance, where more calories are consumed than burned. Regular physical exercise helps to burn calories and maintain a healthy weight, reducing the risk of developing obesity.
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