Tim's grandfather takes nitroglycerin when he feels a crushing pain in his heart caused by ischemia. this pain is known as

The appropriate response is angina pectoris. Angina pectoris is the medicinal term for trunk agony or distress because of coronary illness. It happens when the heart muscle doesn't get as much blood as it needs. This ordinarily happens on the grounds that at least one of the heart's veins is limited or blocked, likewise called ischemia.

Maybe if you put away all your electronics and lock them with a key and give the key to some one you trust like your parents for about a month to stop the process