Free time on campus? Here is what to do

Campus students are the ones with the freest time, arguably. A student might attend at most fifteen classes in a week with a lecture going for four hours at most. You can imagine what they do for the rest of the time. Do they study? Do they sleep?

Some of the students end up wasting the precious free time while others use it to build themselves. Some sleep until late in the day or spend the whole day on bed-busy scrolling on their phones. Is this laziness or a stage?