15.why is "no pain, no gain" an exercise myth?
16. why is cpr important?

15 -  the first option is the right answer.

16 -  the second option is the right answer.

Explanation:

Physical exercise should not be seen as a synonym for pain. It is important to distinguish between muscle fatigue and muscle or joint pain, since it is normal for the exercises to cause some discomfort, especially when starting a new workout. However, this discomfort should not turn into pain. Pain is the body's way of alerting us that something is not right.

Cardiopulmonary resuscitation (CPR) consists of a series of maneuvers performed by health professionals, or by laypeople, to reverse cardiorespiratory arrest and maintain adequate tissue oxygenation and perfusion. This technique can literally save a life if it is done immediately.

CPR can be applied in hospital environments or even outside them, being divided into advanced life support and basic life support, respectively. The emphasis on good quality CPR can save lives.