Answer:
To learn more.
Explanation:
Scientists want to know the advantages and downsides of it, like any other invention. To see if it can replace something else and be safer.
Because most of the time they are not properly warming up the muscles necessary for the physical activity your partaking in.
Answer:physiological addiction is using a drug repeatedly until you become very dependent on it, that your body cannot function without it.
Psychological addiction is becoming mentally dependent on substances or behaviours displayed as a result of addiction.
Explanation:
In Physiological addiction the person becomes too dependent on the substance that the cells of the body can't function without the substance they have been accustomed to.
Psychological addiction in a nutshell is having emotional or mental attachment to a substance
