In a virtual activity where you can control various body systems, the following systems can typically be controlled:
- Blood Delivery
- Food Intake
- Blood Pressure
- Body Temperature
- Glucose
- Pulse
- Oxygen Need
- Sleep
Without specific context about the activity or program, many of these body systems may be controllable. If you need a selection based on common features of such virtual systems, it would generally include Blood Delivery, Blood Pressure, Body Temperature, Glucose, and Pulse. However, all options listed could potentially be controlled depending on the design of the virtual simulation.