Getting ready for a medical check-up not a huge task. Before going for a checkup, you should get a good night's sleep, that is, no less than 6 hours. Lack of sleep can lead to abnormalities in terms of blood pressure, heart rate and body temperature. Will it be difficult for the examiners to differentiate whether the result is true or not? It is also recommended not to eat or drink at least 8-10 hours before the test. This does not include water that can be used freely to prevent dehydration effects on blood sugar as well as cholesterol tests. I recommend that you do not drink alcohol at least 24 hours before your booked slot.