As far as the meditation goes, having having meditation that focuses on breath instead of one about thought monitoring would probably have been better as far as keeping people awake.
After the meditation session there was the question about side effects. For this you might want to look at this thread: http://lesswrong.com/lw/k13/open_thread_april_8_april_14_2014/ascq
The European Community Weekend in Berlin is over and was a full sucess.
This is no report of the event but a place where you can e.g. comment on the event, link to photos or what else you want to share.
I'm not the organizer of the Meetup but I have been there and for me it was a great event. Meeting many energetic, compassionate and in general awesome, people. Great presentations and workshops. And a very awesome positive athmosphere.
Cheers to all participants!
Gunnar
PS. I get it that there will be an upload of the presentations by the organizers and maybe some report of the results some time later. Those may or may not be linked from this post.