You boil them for 10 to 15 minute's
The former,water an vinegar cause no air pollution.
Science has made huge strides in understanding the human brain and how it functions. For example, we know that the frontal lobes are the center of rational thinking and of self control. ... Lesions or damage to the frontal lobes and to other parts of the brain can and affect impulses and impulsive behaviors.
ACUTE STRESS
It is the most common and frequent presentation. Acute stress is most often caused by reactive thinking. Negative thoughts predominate about situations or events that have recently occurred, or upcoming situations, events, or demands in the near future.