State that you want everyone to get warmed up by doing some simple physical exercises.  Stretch one arm forward. Relax.  Stretch the other arm forward.  Relax.  Now, bring both arms forward and parallel; now bring hands together quickly.  Again, again, faster.  Naturally, the sound of applause is created, and you say,  “Thank you, but the applause isn’t necessary, I haven’t given my speech yet.”  Then resume the stretching. “Let’s try reaching upward with one arm.  Relax.  Now the other.  Relax.  Now both.  Reach to the sky.  Now, bring your arms down, bend at the waste, arms out.  Again, again, again…..  When they start to laugh say, “Thank you, but the applause was enough.