Dog Saliva actually doesn't have any healing properties, this is just a myth that is easy to explain. There is a however easier explanation. A dog's tongue is rough which drags pathogens off of a wound, and also debrides damaged tissues of the wound.
I still wouldn't have a wound licked by a dog though, as the saliva still has a number of bacteria that can cause an infection.
Carbon monoxide poisoning occurs when carbon monoxide builds up in your bloodstream. When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide. This can lead to serious tissue damage, or even death.
Carbon monoxide is a colorless, odorless, tasteless gas produced by burning gasoline, wood, propane, charcoal or other fuel. Improperly ventilated appliances and engines, particularly in a tightly sealed or enclosed space, may allow carbon monoxide to accumulate to dangerous levels.
For adults 18 and older, a normal resting heart rate is between 60 and 100 beats per minute (bpm), depending on the person's physical condition and age.
D all above. They are all motivating, which is the main goal.