It is just after 10:00 BST and hundreds of people are stretching to rave beats at The Greenpeace Field at Glastonbury.
They are about to run more than five kilometres (three miles) around the site, taking in the views and kicking off the festival with some exercise and fresh air.
The group Ravers2Runners was started by three ex-ravers who started running around Bristol Harbourside in 2019, and then took their passion for running to the festival for the first time last year.
This year, about 500 people signed up to join them.
Onlookers taking a more sedate approach to the festival told us they were “impressed” and “baffled”.
Video journalists: Alex Howick & Will Richards