More at http://umc.org/videos/ At the age of 91, Bernice Bates has better flexibility than most 20-year-olds. Bates has been practicing yoga for more than half a century and was recently named the Worldâs Oldest Yoga teacher by the Guinness Book of World Records. Bates lost her husband 8 years ago but credits her longevity to the peace she gets from yoga and attending her United Methodist church. âMy family is my church family,â says Bates.