I didn't do any specific or extra training. I am a runner so I was running 3 times a week and I have 2 jobs, both of which I'm on my feet all day. One job is up and down steps all day wearing a backpack and I think that helped massively. So try and get in hills and steps carrying weight . So I didn't change anything outside of my normal days. I was just fortunate enough that the altitude didn't effect me!
