Aqua lungs: how Rod Stewart’s underwater swimming may help his singing

Singer trains underwater like Frank Sinatra once did and scientists say it may be useful in maintaining vocal prowess

Frank Sinatra did it his way, taking to the pool to boost his vocal prowess, and it seems Rod Stewart is singing from the same songsheet. Now scientists say the approach might not be somethin' stupid.

Stewart, 80, is still entertaining fans with his raspy vocals and energetic stage performances and earlier this month he revealed that as well as running and playing some football, swimming also played a key part in his campaign to stay forever young.