Complex sentence: Having become a Hatha Yoga devotee in her fifties, she made a Yoga video with the American Yoga Master Erich Schiffmann, "Ali MacGraw Yoga Mind and Body," which was a bestseller upon release and was still popular more than a decade later.
Split into simpler sentences: Having become a Hatha Yoga devotee in her fifties, MacGraw produced a Yoga video with the American Yoga Master Erich Schiffmann, "Ali MacGraw Yoga Mind and Body,". This video was a bestseller upon release and was still popular more than a decade later.