The question: What large muscle groups does cardiovascular exercise generally utilize? Remember, this is not about what is a "target" of exercise but what actual muscles help all this exercising happen.

I responded with the heart and lungs, which he responded to;
The heart is a muscle in construction, but not in function since it does not affect the bodily movement of the limbs or torso. It is more properly termed an "organ" of the body. Likewise, the lungs themselves are most definitely NOT muscles but organs.

Anyone know what the answer is...

It starts with commitment. the health and safety policy is the commitment by the employer to provide and maintain a safe workplace. the commitment of the workforce is also a necessary component.when the workplace parties sit down to develop an ergonomic approach to patient handling, they will develop terms of reference that set forth how the health and safety committee will function in approaching this problem and reach its goal of reduced injuries.in general, a safe patient handling program will involve the following steps: management approval and commitment to develop and implement a patient handling program.perform a needs analysis.create and standardize patient assessment criteria.develop decision trees to standardize actions.determine which controls are needed to implement specific tasks or patient needs.institute a "no-lift" policy, where possible.

Good samaritan law protects civilians when they render aid to someone in need. 

Positive roles models does great things and novitiate people bad role models does bad things