Most people who have sweated it out in the gym trying to add a bit of muscle definition to their bodies will know just how difficult such a task is, but trying to grow muscle tissue with a real muscle structure complete with blood vessels in the laboratory has proven to be an even more difficult brief for researchers. Now a team from the Eindhoven University of Technology (TU/e) has done just that, paving the way for the creation of engineered muscle tissue that can be implanted into patients who have lost muscle tissue through accidents or surgery.