Scientific reasons an aquarium is necessary for your health

Scientist Dr. Wallace J. Nichols's 10 year plus research confirms, that looking at, being near, in, on, or under water can make you happier, healthier, more connected, and better at what you do.

In his new book, Blue Mind, Dr. Nichols explored further into neuroscience and how looking at water, or being around it coaxes our brains into releasing happy chemicals such as dopamine, serotonin and oxytocin, helping pulling away our stress.

Dr. Nichols gives scientific reasons why:

1. Water returns us to our natural state: We are connected to water from the onset of life. Babies' bodies are 75% water. As we age, we become drier and have only about 60%, but our brains are still 3/4 water and even our bones are 31% water. The brain, which rests in a kind of "clear, colorless cerebronspinal fluid" in our heads, reacts to water very fondly because, as Nichols writes, "our ancient ancestors came out of the water and evolved from swimming to crawling to walking. Human fetuses still have 'gill-split' structures in their early stages of development," and the water in our cells "is comparable to that found in the sea." This biological connection to water, triggers an immediate response in our brains. When you see the ocean, you know you're in the right place.

2. The very sight of lake or ocean subconsciously calms us. Dr. Nichols cites a study ("Functional Neuroanatomy Associated with Natural and Urban Scenic Views in the Human Brain: 3.0T Functional MR Imaging.") that shows how areas of the brain associated with less stress and more empathy are activated when we look at nature scenes. While pictures of urban landscapes elicited activity in the parts of our brains associated with stress, participants who were shown nature pictures had heightened activity in the parts associated with "positive outlook, emotional stability and the recollection of happy memories." And when it comes to nature views, the coast wins. Another study, "Human Brain Activation in Response to Visual Stimulation with Rural and Urban Scenery Pictures: A Functional Magnetic Resonance Imaging Study, shows that coastal images were more effective than other nature images in activating participants' reward systems --" an area rich in opioid receptors that triggers feelings of wellness," Nichols writes.

3. Water rejuvenates a tired mind: Nichols illustrates that we now have more screens to touch, social networks to update and websites to refresh, and our fatigued brains need to recharge. Water helps that happen. Nichols references a study published in the Journal of Environmental Psychology in 1995, titled "Views to Nature: Effects on Attention." Researchers wanted to find out whether or nto dorm students with views of beautiful nature scenes would do better on cognitive tests that measured attention, visual scanning and motor speed, over students with more urban views. "The dorm rooms were grouped by the views from their windows: trees and lake, lawns and buildings, and brick walls and slate rooftops," Nichols writes. "Students whose rooms overlooked trees and the lake not only performed better on the cognitive tests but also rated their 'attentional functioning' as more effective than that of all of the other groups combined." The study found that, not only does nature rejuvenate a tired mind, but "an attention-restoring experience can be as simple as looking at nature." 

4. Looking at picture is good, but water is even better IRL:  While looking at pictures is one thing, it turns out the real-life natural world also wins over urban landscapes. Nichols references a 2011 study in which a smartphone app called Mappiness tracked the well-being levels of about 22,000 participants. The Participants received random prompts to report how happy they were in that moment. According to the over 1.1 million responses that we sent in, not only were people happier when they were outside, they were 5.2% happier when near bodies of water.

5. Blue soothes: Blue, it turns out, is the world's favorite color. Nichols cites a 2003 research project that surveyed 232 people from around the world about their associations with various colors. 42% of men said blue was their favorite color, while 35% of women surveyed said the same thing -- a majority in both brackets. Nichols isn't surprised. We "evolved on a planet that is primarily shades of water and sky blue," so it makes sense that blue stimulates a positive emotional response. He quotes neurosurgeon Amir Vokshoor, who explains that "the arousal mechanism stimulated by blue's wavelengths correlates to the release of neurotransmitters thought to be associated with feelings of euphoria, joy, reward, and wellness related to the effects of dopamine. "Nichols also sites a study in the Journal Perceptual And Motor Skills, entitled "Effect of Partition Board Color On Mood And Autonomic Nervous Function," which found that we feel less fatigued and claustrophobic when we're around the color blue.