so I'm not gonna write this for you but I can explain it
Let's say your overweight and you would lose weight, but instead you play ps4 all day. The barrier is that you are gaming to much. The way to overcome this barrier would be playing games less. The ways you would do this are watching play times everyday, set a timer on the system for how long you can play every day, or even just stopping altogether. The benefits would be health of the brain and body, and losing weight.
So, I hope my demo kinda helped here. BUT WRITE YOUR OWN! (you'll get in trouble I swear.)
Explanation: the application of medical knowledge to the investigation of crime, particularly in establishing the causes of injury or death. that is the definition
These are some of the examples: new married people,small children,teenagers, pre-school years,retired adults,basically new things to life or like for beginners. Hope this helps.