Keiser Classes and Keiser Studies Check out the current group exercise schedule for days and times of the Keiser Circuit class offered in Wayland. The Longfellow Clubs have pioneered a series of studies for members of our community, centering on strength training. We have embarked on a multi-year study that we are convinced will not only demonstrate the wide benefit of strength training, but will shed light on how to train and motivate people to integrate strength training into their lives. The Keiser Study is an eight-week program that is free to the public and is offered at various times during the year.