Yoga teacher strong at age 98

She is the "world's oldest yoga teacher" who, at age 98, still teaches five classes a week. But above all, Tao Porchon-Lynch is a poster child for health and positivity in a world obsessed by wellness and longevity. The former model and Hollywood contract actress - who earned her title from Guinness World Records - still has a delicate, slender physique.

Tao, as everyone calls her, grew up in India and lives in the suburbs of New York, traveling the world attending yoga retreats. Stylish and fashionable, she zips from her Hartsdale home in Westchester County to the studio in a smart car. Once in the studio, she happily demonstrates yoga poses, even if she sometimes calls on one of her dedicated students to show off others.

But more than yoga, she imparts a zest for life that has sustained her through nearly a century of existence, marked by encounters with the likes of Mahatma Gandhi and Marlene Dietrich.