What's your favorite You-Tube video? Here's mine. I first saw it about four years ago, and I love viewing it whenever I need a lift. You might try the techniques displayed here with your colleagues. At your next meeting, just get up and do as the master advises!
In April, 2004, I went to an outdoor Laughter Yoga session in Bombay (Mumbai), India. At 7 AM, I showed up at the "Gateway of India" with about fifty dedicated locals. For the next forty-five minutes, we did laughing exercises. It was quite invigorating and a great way to start the day. Shown below is the session leader (center). My wife Wendy is second from left.
I still use some of what I learned that morning.