there exists an increasingly common phenomenon that senior 3 students give up their spare time so as to get higher scores.in my view,it is improper to study thorough the day.
in the first place,it is some break time that helps us work more effectively,for you're able to refresh yourself during that time.in the second place,exhaused and tired,you're more likely to fed up with the knowledge which is used to fill in your brain constantly.eventually,too much study could contribute to your less fixed concentration.
in short,you're supposed to have a balance between work and play.too much of one creates a sacrifice or loss of the other.