Genzebe Dibaba

I damaged my hamstring at the London Olympics and had to stop training for five months. At times, I thought my career was over.

Even when I'm back home, I find the flat parts of the course tougher. Because it's flat, I feel it more in my knees.

I find outdoors easier than indoors, but I am more interested in indoor athletics. I prefer it because it is hotter indoors, and I like the shorter laps.

Usually, it is not difficult to change from indoors to outdoors.

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

I already have natural speed, which I don't need to work on, so in training I've been working more on my endurance.