The student who desires to put the work of two years into one should not be permitted to have his own way. To undertake to do double work means, with many, overtaxation of the mind and neglect of physical exercise. It is not reasonable to suppose that the mind can assimilate an oversupply of mental food, and it is as great a sin to overload the mind as it is to overload the digestive organs. CT 296.2
To those who are desirous of becoming efficient laborers in the cause of God I would say, If you are putting an undue amount of labor on the brain, thinking you will lose ground unless you study all the time, you should at once change your views and your course. Unless greater care is exercised in this respect, there are many who will go down to the grave prematurely. CT 296.3
In regulating the hours for sleep, there should be no haphazard work. Students should not form the habit of burning the midnight oil and taking the hours of the day for sleep. If they have been accustomed to doing this at home, they should correct the habit, going to bed at a seasonable hour. They will then rise in the morning refreshed for the duties of the day. In our schools the lights should be put out at half past nine. CT 297.1