The Four Weddings And A Funeral star told Yoga magazine that she first took up the discipline 25 years ago and credits it with totally transforming her life.
'Yoga's helped everything,' she said. 'It's helped my outlook, how I interact with people, it's made me more conscious, it's helped me be able to focus, make better decisions, think on my feet. I don't know what I’d do without it. It's my sanctuary.'
She added that she has taken yoga practice beyond the physical and is 'moving into a more spiritual path'.
The 53-year-old former cosmetics model also revealed that she has undertaken the Ayurvedic cleansing system of Panchakarma 'several times', calling it 'something that's really important for grounding myself, especially if I've been stressed out at the end of a movie'.
She said: 'I've also been practising Ayurvedic medicine and I've read the Bhagavad Gita [Hindu scripture] and [mystical poet] Rumi, and these are very important.
'I will do simple cleanses and have a day where I'm quiet and don't talk. I need to have this experience, especially after work has been really intense.'