Kenny Chesney is revealing the real reason why he decided to get into "serious shape." "Once I agreed to the No Shoes, No Shirt, No Problems Tour, I changed a lot about my life," he recalled in his new Heart Life Music book, which dropped on Tuesday, November 4. "I wanted someone on the road with me to work out daily and get my body into serious shape." The singer went on to share that he had always "physically felt" music and wanted to "cover the entire stage" while headlining. "Some artists stand at the mic, and they're awesome.