Mark the following statements as True or False: Lack of physical exercise can cause disease.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement we need to evaluate is "Lack of physical exercise can cause disease." This means we need to determine if not exercising can lead to health problems.

2. **Recognizing the Importance of Physical Exercise**: Physical exercise is crucial for maintaining the health of various organs, especially the heart and lungs. Regular exercise helps these organs function properly.

3. **Effects of Lack of Exercise**: When individuals do not engage in physical activity, it can lead to several health issues. For example, the heart may not pump blood efficiently, and the lungs may not function optimally. This can increase the risk of diseases such as heart attacks and strokes.

4. **Consequences of Inactivity**: Lack of exercise can also contribute to obesity, as calories are not burned effectively. This accumulation of fat can lead to various health problems, including diabetes and cardiovascular diseases.

5. **Conclusion**: Given that lack of physical exercise can indeed lead to various diseases, we can conclude that the statement "Lack of physical exercise can cause disease" is **True**.

**Final Answer**: True

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