I spent 10 days at altitude (why runners do this)

A recent stint of 10 days in Font Romeu in the Pyrenees mountain range saw me training at altitudes of 1,400-1,900 metres. But is just 10 days enough to see any changes in one's running? I spoke with University Professor Charlie Pedlar about the effects of altitude training for a runner and at the end, asked him that question.

For the full chat with Charlie: https://youtu.be/2x-U8NHInWk

I've always had a fascination with endurance running. Running 500K in one month (10 miles everyday for 31 days), or 100 parkruns, seemed appealing, so I've t...