Frequency is the correct answer
Long-term exposure to polluted air<span> can have permanent </span>health<span> effects such as: Accelerated aging of the lungs. Loss of lung capacity and decreased lung function. Development of </span>diseases<span> such as asthma, bronchitis, emphysema, and possibly cancer.</span>
You can sprain your wrist from writing for typing too much at the wrong angle.
