She should try to get a day off so she can let her muscles relax and have time to rebuild new muscle. Remember that muscle grows slowly so within 24 hours muscle starts to grow thus she should rest for at least 1 or 2 days so she doesn't exhaust her body.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Yes it does the chemicals in whatever you are smoking are more than likely altered from what it originally was, therefore the chemicals start to taint the blood vessels and damage them permanently.
She thinks a surgeon might have been able to save geraldo.