Thats the beauty of training in an open cockpit biplane...plenty of fresh air to keep you alert. Not boxed on with yesterdays vomit fumes still permeating from the back seat.
One minor problem tho ... there was an Instructor who used to hoik over the side...as soon as you heard him 'clear' the throat....pay careful attention to which side he leaned to or you could cop a goozie on yr goggles !!
Ah the good old days.!