<span>the training in which an athlete changes between 2 activities, typically requiring different rates of speed, degrees of effort, </span>
A. Staying physically active
the more energy you use the higher it grows
You are good enough.
Don’t let anyone tell you otherwise.
I would think it would depend on the situation. Basic first aid may be all that is required for certain wounds or accidents. In other circumstances it should be administered until a trained professional can take over.