Jennifer Aniston has ruled out having plastic surgery. The former 'Friends' actress - who turns 40 next year - insists the only reason she would ever consider going under the surgeon's knife would be for medical purposes.

She said: "I once had the degree of my deviated septum operated on. Since then, I can breathe much better and sleep nights like a baby.

The rest of my body is all mine. And absolutely natural. And it's going to stay that way. I am very satisfied with what God gave me." Jennifer also revealed she maintains her svelte figure with regular yoga sessions.

She added: "I do the best I can to keep myself fit, both in body and mind. I also draw a lot of strength and energy from yoga, new age and cosmic energies. I very much believe in karma - the way you treat your fellow man is how you will ultimately be treated yourself."