I train mainly with guys, and they help to push me.

I wanted to train more for the outdoor season than the indoor season, so I changed my training totally.

I had a great season and truly enjoyed competing around the world - from Monaco, where I managed to establish a world record, to Beijing, where I finally captured my first world outdoor title.

My focus in 2016 will be the IAAF World Indoor Championships in Portland, and as preparation for that, I will try to break the world indoor mile record in Stockholm on February 17.

Everyone is getting prepared for this, to win the gold medal. I am among them: I want to win the medal.

It's a very weird relationship because we all need each other to train. We push each other to be stronger, but sometimes we want to beat each other. We want to be the best. It's interesting.