Has anyone else trained so hard that they get a burn in their lungs? I thought this was pretty normal when really pushing yourself hard, but when I said to a mate that my sprint training was so hard last night I even felt the burn in my chest he seemed a little concerned!

I get it loads if i haven’t warmed up properly. I’ve even tasted blood in the 1st cyclocross race I did (which was very cold)

Probably just the effects of breathing cold air in over a period of time