Around mid-afternoon, in a financial district in Stockholm, office workers file out of their workplaces and make their way towards a dark, pulsating place. It could be a parking lot, a theatre, or an off-hours nightclub - but it will be packed with gyrating employees in ties and sensible pumps. They are at Lunch Beat, an hour-long disco party, and the newest trend amongst executives in Sweden.
These non-profit parties work just like any club, with an entry fee at the door, guest DJs and pulsating lights. The only difference is that the fees will be used towards space rentals, and take-away sandwiches so that the executives will have something to wolf down for their 'real lunch'. The parties are also 'open source' and ready to be replicated anywhere in the world.

The organisers have drawn up a very Hollywood-esque set of rules that all other parties must follow. Perhaps predictably, they include pointers like
"1st rule: If it’s your first lunch at Lunch Beat, you have to dance.
  2nd rule: If it’s your second, third or fourth time lunch at Lunch Beat, you have to dance."

Overall, it seems like a fun, work-friendly way to brighten your day. Assuming that coming back to work drenched in your co-worker's sweat qualifies as work friendly.