Take a break. Then study a new 10 minutes. This “distributed learning” come up to is highly efficient because it honors the method the brain likes to work. The brain wants recovery and recharging time for “protein synthesis.” The break periods are when your brain assimilates your effort. They are a authoritative tool which many teachers do not acknowledge. To sit and study for hours and hours is not only boring, it creates fatigue, tension, and disruption. You cannot learn if you are fatigued, stressed, and distracted.It has been proven that short bursts of concentration repeated frequently are much more useful than one long session. So, even if you only have 10 minutes, DO IT.