True, this means Johnny is a morning person, after getting a good night sleep he is able to study because he feels more energetic. One always needs a good amount of energy in other to study efficiently and effectively.
Answer:
Well, usually, 65 year olds usually retire, but, some people are strong enough and are willing to keep on doing their day-to-day jobs.
Only thing I can think of is ivory. They do produce it, it is exported but that's illegal...