Which of the following is true concerning stretching techniques?
a) ballistic stretching exercises always involve bouncing
b) you should always stretch. before warming up.
c) any stretching exercise can be harmful.
d) not all ballistic stretches require supervision.

The one that is true concerning stretching techniques is : B. You should always stretch before warming up

You should do this in order to prevent any potential injuries that may occur during your exercise

hope this helps

20 times a minute is usually the average respritory rate of an adult. additionally the patient is breathing on his own, is clearly maintaining his airway, and is intaking a sufficient amount of air. you shouldn't use a bag valve mask, cpap, or other form of positive pressure ventilation, unless the patient has lost control of his airway, and is not breathing (apneic) or has rapid breathing or slow and shallow respirations. this patient would most likely and should be put on an non-rebreather mask or nrb attached to 100% high flow oxygen at 15 l/min. don't use a nasal cannula, as the amount of oxygen it provides is limited with a rate of 6 l/min.