SB is right.
You do need to be fitter than for most other licencing authorities.
There are extensive blood tests, resting ECG, stress ECG, brain scan, full urine tests, psych, full eye test, full ENT check.
A good idea the day before is to drink plenty of water and try and eat salad / vegetarian food. (Apparently helps in the urine protein result ?)
Exercise and minimum alcohol would also be a very good idea.
Good luck.
