Speed’s conviction about what others may consider gimmicks all started at Leeds where he saw a 34-year-old Gordon Strachan defy age and appear alert and ready to go every single time... Naturally he asked him the secret of his success. “Eating bananas and seaweed,” came back the answer. Throw in some good old-fashioned Welsh cawl (meat and potato soup), lots and lots of vitamin supplements and special drinks for rehydration and Speed had a diet that he would follow for the remainder of his football career.
From Gary Speed Remembered by Paul Abbandonato