Information for The Harmony Test at Hampstead Theatre, Inner London (Play). Newlyweds Zoe and Kash are ready to start a family. Zoe wants to take a practical approach: fertility plans, vitamin supplements and a strict diet. Kash, on the other hand would, rather follow the advice of an intriguing man he just met in Holland and Barrett. Empty-nesters Naomi and Charlie have been living in matrimonial bliss for twenty odd years - or at least they had been according to Charlie. Frustrated and lonely, Naomi heads to the gym in search of a new lease on life. Instead, she finds Rocco - a much younger personal trainer willing to take a hands-on approach to the job...