<u>Answer:</u>
<em>Ergonomics is basically a study of how people do their work in the work environment.</em>
<u>Explanation:</u>
<em>For example,</em> the position that they sit, the number of breaks that they take <em>between the work, posture, etc.</em> There are certain health issues related to continuous use of gadgets.
The improper posture may lead to back pain which may <em>lead to life-long back bone issue</em>. Watching continuously the work on the system may spoil eye sight which may <em>lead to eye-dryness and wearing spectacles</em> at an early stage.
<em>In order to avoid health issues, follow exercises, take break as required, maintain correct posture, etc.</em>
