Answer: A drug that alters brain functions and leads to change in emotions, consciousness and mood of a person.
Explanation: It is a combination of two words; Psycho and Active.
Psycho meaning relating to the wellness of the mind and body.
And Active meaning working or in action.
So, a psychoactive drug is a pharmaceutical product that changes the function of the brain which leads to alterations in behavior and cognition.
They are used for both medical and recreational purposes.
Some of these include; stimulants, antidepressants and anaesthetics.
Psychoactive drugs usually cause brain alterations which the user may find rewarding and which could subsequently lead to addiction.
Answer:
A. Targeted exercise should improve the performance of a certain task. Repetition of specific exercises will help improve the given task.
Explanation:
The principle of specificity basically states that to be good at a certain task or skill, you need to perform that task or skill. If you want to improve the performance of a certain task, you need to do exercises that develop the skills that are specific to the task.
A little confusing, but to make it even simpler, you know the saying "practice makes perfect". In order to master the skill, it needs to be done repetitively. In the context of exercising or training, you need to do exercises that will develop your body to do the skill you want to achieve.
A swimmer for example, will not improve in swimming, if he or she does not swim. They can only get better if their training is swimming.
