Ihave a whole lot of questions, so i hope someone can .
when you stretch a muscle, the
1muscle fibers tighten
2. blood flow decreases
3. myofibrils slide apart
4. myofibrils slide together

what type of stretching should you never do?
1. ballistic stretching
2. dynamic stretching
3. static stretching
4. non of the above

if ray makes sure to hold a stretch for 30 seconds, he is doing a
1. ballistic flexibility exercise
2. cool-down
3. warm-up
4. static stretching activity
anything , !

Hyperextension vends a joint in the opposite directions as flexion. true or false

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.

Which of the following is not a fitness benefit of cycling a: very effective at burning fat b: provides an upper body workout c: provides an aerobic workout d: good exercise for out of shape people