Inside the house, which dates to around 1680, a volunteer shows the room where the peace conference failed.

The volunteer must also show certain personal traits such as:

The volunteer must also show certain personal traits such as maturity, leadership skills, and sound judgment.

Only volunteers who were easily hypnotized showed the effect; there was no reduction of pain in the others.

The volunteers may show a videotape or guide a group discussion.

"I think that the volunteers have shown incredible enthusiasm and accuracy in what they're doing," she said.

But the volunteers did not show such a drop and none developed opportunistic infections.

Eight volunteers in a control group, who did not do any interval training, showed no improvement in endurance.

The volunteers showed no sign in their hearts of oxygen starvation.

The older volunteers who did best on the tests showed more activity in the two sides of the brain.