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 , !