Depends on the person.My first worry would be if the woman is okay or not and if i could help her out.
Use the settings of the machine to decrease the intensity
George can work out for the same amount of time but with a lower intensity that way his heart rate won't increase
Center for disease control, national institute of health, occupational safety and health administrations.
It's important because, you need to a valid source for a health situation. It could cause more than good if you don't know if the health source is not true.