REPORTER: It's 7 o'clock and the party's just starting. But this is no ordinary rave - they serve fruit smoothies instead of alcohol, and once it finishes everyone goes to work. This is Morning Glory, a very early, midweek rave which is proving a hit with London's stressed city workers.
ANNIE, REGULAR RAVER: "I just love the energy in here, it's so different than at a night club. When I'm dancing down there, I'm like my whole body is moving, I'm sweating, it's a bit like a class at the gym."
ALICE, REGULAR RAVER: "I came right from the start when everyone thought the idea was bonkers and it was such a massive success."
REPORTER: For the less energetic, there's yoga and a massage station. Events organiser Samantha Moyo and dancer Nico Theommes came up the idea.
NICO THEOMMES, CO-FOUNDER OF MORNING GLORY: "We believe there's very few places in the world which couldn't do with a Morning Glory and our intention is to bring it to everywhere."
REPORTER: The raves only started in May but they now pull in crowds of more than 400. Sam says it gives them the boost they need to get through a tough day in the office.
SAMANTHA MOYO, CO-FOUNDER OF MORNING GLORY: "It seems to have real impact on people. We get lots of feedback from people who've been to the events feeling slightly changed or shifted and inspired and energised."
REPORTER: A new survey has just revealed that only two thirds of British workers are satisfied with their current employer. They're also among the unhappiest in Europe and that has a direct impact on productivity. Exercise and relaxation is a well-known cure. Morning Glory might be just what the doctor ordered.
Tickets are £10 in advance and £12 on the day. Book here.