Peep Show Series 4 Episode 3 Gym ( Air Date 2007-04-27 ) Genre Comedy category. Overview "In order to avoid spending time with Sophie, Mark gets a gym membership. Whilst there he discovers that Jeremy's ex-wife Nancy is working there. Mark tells Jeremy who then becomes desperate to get back together with her. He decides to take a job as a cleaner at the gym and sets about stopping her from dating Mark's personal trainer Matt.".