For those looking to avoid travelling on the cramped and sweaty underground whilst the Olympics are in London, a new app has been launched that promotes a more healthy alternative, walking.

Endorsed by none other than two-time decathlon gold medallist Daley Thompson, the app provides details of how many footsteps it takes to get between stations, and whilst you're walking to your destination lets you know how far you've travelled and how many calories you've burned along the way.

To promote the launch Daley led an army of people sporting Olympic pink through the streets of London, as they walked from Monument to London Bridge.

The app's designed by health insurance company PruHealth, and Nick Read, director of Vitality for PruHealth, told us a little bit more about what Walk the Tube can do for you.

Daley Thompson, one of our greatest Olympians, explained why it's important to keep fit.

Many will be glued to their screens for the next week as Team GB aims to grab more golds at the games, but there are hopes that the lasting legacy of the 2012 London Olympics is that more people stay active and maintain a healthy lifestyle.

I'm Alfred Joyner. For the latest news headlines, go to our website

Written and Presented by Alfred Joyner