Now that I've read my original post I am now aware how you can interpret it as me thinking it's an exam
I reckon I was thinking more along the lines of the weeks leading up to the medical in terms of my lifestyle. Obviously as you've said, I have to cut down on my partying and smoking habits. In terms of things such as eye sight, hearing etc I wasn't too concerned.
What got me under the impression that it was dreadful was one of my good friends had a blood pressure too high to the point he had to wear a heart beat monitor for 24 hours and a repeat test of roughly 10 times.
But you're right, it's not something I should stress over, it's just a series of simple tests...
Thank you for your reply, I appreciate it!