On Thursday nights, members of the Mizzou Slackline Club, beginners and veterans alike, can be found practicing at Show-Me Gymnastics in Columbia, Mo. After setting up their rock-climbing-turned-slacklining equipment, the members prepare to step up. Some approach the narrow line with hesitation, taking a moment for deep breaths before placing their feet on the webbing. Others, those with more years of walking the line behind them, are daring enough to slowly bounce on the line, gaining momentum to jump into the air from their suspended position.