by doing activities and being scared or screaming
drugs
exercise...
This usually causes the irregular heartbeat to be reset into a normal heartbeat.
Yes.
Among many other things, a heartbeat.
Blackish and burnt. :(
the best exercise is either cardio or running
too little oxygen
parasympathetic
Parasympathetic. (Apex)
incrasing metabolism increasing pump cardiac muscle to pump the blood circulation
It causes blood pressure to increase.