Jessica Ennis

Things have changed so much, with Facebook and Twitter. Everyone is so much more accessible these days: no British athlete has ever experienced what we are experiencing now. It's such a unique situation with the home Olympics.

One minute you're a developing athlete trying to get to the top, then the next minute you do well and win a medal somewhere, and then it's all foisted on you. You never know when it's going to happen. You don't think about the media side of things when you're a young athlete trying to do well.

The importance of heart health became very real for me when my father died of heart disease seven years ago. Having experienced the loss first hand, I am inspired to do everything I can to break the cycle and prevent families from losing loved ones to this preventable disease.