Tell me if the following activities are healthy or harmful: sleeping, running, eating fruit, smoking, listening to music, drinking alcohol, occasional cocaine usage, hiking by yourself in the desert with no water, eating McDonald’s

There are a variety of activities here, some are healthy while others will result in doing harm to your body.  The clear healthy activities include: sleeping, running, eating fruit and listening to music.  The activities that are clearly harmful include: smoking, occasional cocaine usage, hiking by yourself in the desert with no water and eating McDonald’s.  There is one activity that is widely thought to be healthy when done in moderation: drinking alcohol.