what idea is common in each set of pictures

The idea that is common among the pictures is that they all depicted an unhealthy lifestyle which causes the person to acquire diseases such respiratory and circulatory disease.

EXPLANATION:

Balanced diet, adequate sleep, regular exercise or physical activities, proper hygiene, and avoiding cigarette smoking and alcohol drinking are signs of a healthy lifestyle.

To know more about healthy lifestyle, visit this link:

https://brainly.ph/question/19161

Ways to have a healthy lifestyle, refer to this link:

https://brainly.ph/question/1640683

To avoid respiratory disease, read this relevant information:

https://brainly.ph/question/1586897