Flex Body with Sigga Ásgeirs - a free outdoor class by Kramhúsið and Borgin okkar. Flex body is our most popular fitness- and movement class. For all those who want to get in shape and increase flexibility in a fun way with good music. Sigga Ásgeirs has been developing this fitness program for the past 10 years. Using her own flare she has created a unique mixture of Dance Cardio, strength-building exercises using your own body weight, stretching and moving meditation.