This was me 5 minutes before my test was due to start:
It was the hottest day of the year (32 degC), I'd just driven through 2 hours of London rush hour traffic, been pulled by the cops for no plate and then, 2 miles from the centre, the heat expanded my throttle pedal pivot bar so that it wouldn't return to off, so engine revving at 3k rpm!!
Now THAT is stress !!