'Slacklining 101' instructor Mitch Host demonstrates a Zen balancing move on a slackline at French Regional Park in Plymouth Thursday, Sept. 20, 2012. The adventure sport develops coordination, increases endurance and concentration, tones muscles and more while balancing on a two-inch-wide nylon line.

A 45-foot long, two-inch wide slackline is connected to a wooden post prior to the Three Rivers Park District adventure sport class, 'Slacklining 101', held at French Regional Park Thursday, Sept. 20, in Plymouth. Slacklining develops coordination, increases endurance and concentration, tones muscles and more while balancing on a two-inch-wide nylon line.