It is a wonder how country stars stay in shape on the road, much less how they stay so ripped. Heck, it’s hard for most people to stay in shape off the road. Here are the workout secrets of the fittest stars in country music. We can’t make a list of the fittest country singers without mentioning Tim McGraw. We have all enjoyed his famous wifey sharing her hubby’s thirst traps through the years, but it wasn’t always that way. McGraw has shared that early in his career, he had bad drinking and eating habits that led to being out of shape, but he has changed that completely. The country star has …