Answer: medulla of the brain
The medulla of our brain is the control center of our heart rate. It either slows or speeds the heart beats per minute. If the medulla of the brain is not working correctly, our heart rate is also not being controlled correctly. We would not be able to live without the medulla. It helps in regulating blood pressure, breathing and transfer of neural messages from the brain to the spinal cord.
Sandwich Generation
This phenomenon is most prevalent in the developed world where the expectancy rates are high. Children are usually considered as 'Capital Intensive' while the elderly parents are considered as labor and time intensive hence balancing the needs by sandwiched parents is typically challenging.
It eats away into personal time and therefore increases one's risk of developing anxiety and depression.