Running Workshops (1): Energy levels

I have been running a few workshops recently, and have been stuck by how the way most workshops are run the 'wrong way around'. What I mean is that most workshops start with some presentation. I don't mean just a 15 minute introductory thing, I mean a couple of hours worth of presenting. Often people don't get to be 'creative' or generative until after lunch, and by then their energy has declined, and the ideas are not as creative or as bountiful. I would have thought it would be better to have people start the by being creative.

I have some idea that people's bio-rhythms are also on the 'up' in the morning and down in the afternoon. Even more reason to try to capture people's creativity in the morning.