Suzanne Brownell leads a qigong class on a Tuesday evening at Great Hill Park in Weymouth, Mass. Qigong (pronounced "chee-gung") is a Chinese meditative practice that can be traced back more than 4,000 years.

Suzanne Brownell leads a qigong class on a Tuesday evening at Great Hill Park in Weymouth, Mass. Qigong (pronounced "chee-gung") is a Chinese meditative practice that can be traced back more than 4,000 years.