One of my favourite shows on television was the Starz series Spartacus that ran from 2010 to 2013. The first season (Blood and Sand) and the following 6-episode prequel mini-series (Gods of the Arena) were great, but in the second season (Vengeance), they introduced a new lead actor who did not sport the type of muscularity a gladiator should have.
This is the type of physique you get from doing traditional, low-intensity, machine-based circuit training. If done properly, however, circuit training can build some serious muscle. Find out how to do it in Modern Muscle Moulding: Taking Circuit Training To A New Level!