1.possible:
Watching TV
Working
Exercising
Eating chocolate
Surfing the internet
Impossible:
Dieting
Cleaning
Playing computer games
2.If the actions are often repeated, then it can become an addiction.
3.For example, when you watch TV for a long time, your eyesight may deteriorate, or when you work for a long time, stress and fatigue appear
4.There may be an addiction to walk in the evening or eat dumplings every day.