Country star Brantley Gilbert has been ordered to cut down on his rigorous workout regimen after suffering an umbilical hernia.

The You Don't Know Her Like I Do singer has been hitting the gym five days a week, but his penchant for lifting heavy weights on a daily basis has resulted in a painful abdominal injury.

He tells, "I've got four tears in my stomach."

However, Gilbert isn't convinced his physical exercise is to blame for the ailment as he has always felt a strain on his stomach when he belts out a tune.

He says, "I think I really, legitimately got it from singing."