Prince Harry and the Duke and Duchess of Cambridge attend a training day for London Marathon runners

The video discusses a mental health marathon aimed at normalizing conversations around mental health and reducing stigma. Participants are encouraged to join the event, wear blue headbands, and help break a world record. The speaker emphasizes the importance of community involvement and wishes participants success in their training.

What is the expected outcome if 30,000 runners wear blue headbands during the marathon?

What encouragement does the speaker give to the participants regarding their training?