Manchester United boss Sir Alex Ferguson admits he doesn't feel stress in the job.

Ferguson insists stress remains an alien concept to him, although he accepts his love of horse racing affords him a valuable release from life at Old Trafford.

"I don't feel stress, I must admit. I was more anxious watching Man City playing (Aston) Villa (earlier this month) than on my own game against Liverpool," he told Radio Five Live.

"I was getting to a point at United where I was obsessed with the thing (the club).

"It is a great club but you still need to release yourself from it and it (horse racing) has helped."