This will help to relax when studying for those tests.
Mix together equal parts of dried skullcap, linden flowers, and sage leaf. Store in a dark place in a jar. Make a tea in the normal way and mix well together well. Use 1 tsp. to 1 cup of boiling water. ( avoid using microwave to boil water ), Drink 1 cup before examinations or 3 cups a day whilst studying. Remember to turn off stove after making your tea.