1 Make studying a regularly-scheduled part of every day. 2  Study difficult subjects and those you do not find very interesting first, when your energy level is higher.  Be aware of your best time of day when you are the most alert, and use this time for studying.
Loading ... about 2 days contents of a 250ml cup of coffee. It only takes you two hours to process it trough your system if you weight 200 lb, you will loose 50% of it on your first urine, but it does not clear completely out of your system for about two days.
If you h â¦ ave smoked marijuana then the drug will stay for 3 to 30 days. This is normal for the common drugs. But in the case of marijuana, this can be detected even after a month in Urine drug test marijuana. Marijuana will stay in your system for 10 days if you have been smoking occasionally.If it is smoked on regular basis it will be there up to 45 days and if you smoke constant pace then it will be in the system for as long as 90 days.arijuana will stay in your system for 10 days if you have been smoking occasionally. If it is smoked on regular basis it will be there up to 45 days and if you smoke constant pace then it will be in the system for as long as 90 days.