Because most of the time they are not properly warming up the muscles necessary for the physical activity your partaking in.
Answer:
If you don't, you could experience cramps, or even injure yourself
Explanation:
An advantage of the syringe method is that blood appears in the hub when the vein has been entered.
A-Listening to music
C- calling a family member
D-Writing in a journal
These are for Apex.