All Doctor of Philosophy (DPhil) students must write an acceptable research proposal. This has a clear and explicit purpose: it makes certain that you have a worthwhile research project - you have a good grasp of the relevant literature and the major issues, and that your methodology is sound;
If the above tonic helps relieve your leg cramps, try to boost your potassium levels by eating more of these potassium-rich foods: apples, bananas, dried fruits, avocado, mushrooms, yogurt, kefir, spinach, tomatoes, mushrooms, baked potatoes and cantaloupe.
Note that bananas do not trigger leg cramps. That said, suffering from leg cramps after eating a banana could point to potassium deficiency. Of course, too much of a good thing can be bad for you as well. As mentioned above, if you have an abnormally high potassium level in the body, it could also lead to muscle cramps.