Where are the examples?
Here a few if you need some, being happy one moment and then getting angry for no reason.
Crying and then laughing.
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Running - Breathing in polluted air can cause long term damage to lungs.
Swimming - Pollution is one of the many hosts of bacteria, and if someone was to accidentally drink the pool water, it could lead to them being extremely ill.
Post-secondary education is education after high school, like college, technical school, etc.
Benefits are more education (derp obviously :)). Also, it gives you an advantage on the job market, as employers tend to hire those with more education.