Thanks all for the response.
I know i should have quit ages ago and i know i will do.
I'm 27 now but started regularly smoking probably at 21 with the amount increasing through uni.
I've never had any experience of medicals and have only recently decided to pursue the actual career.
However, since then I've been reading off-putting stories where you're made to blow into tubes etc.. and some guy almost passing out in order for them to get a sufficient reading. Another guy having to run around a car park to get his breathing up to scratch
How difficult really is the lung assessment?