When I was a boy I was quite a good athlete - represented my town at swimming and my school at cross-country, but had to take a few years off sport due to multiple ingrowing toenails. I really got into cycling when I was 25 (I'm now 33) but one thing that stopped me competing was that on harder club runs I often found myself really struggling for breath, which was surprising seeing as I have a 7.5 litre lung capacity. Last year I finally took a lung function test - I have excellent lung health, but probably have polyps in my nose, which means that I produce too much mucus and then swallow it down during my sleep (compared to during the day, when I secrete it in various parts of the house). I was advised that an operation might help me, but then I got distracted by a broken leg. And the birth of my son. And my new job. And my studies. Now that I've got the first one out of the way, I'm considering having the operation. Has anyone ever had one done? Do they hurt or have any serious side effects? Was it worth it?