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How Smell, Taste & Pheromone-Like Chemicals Control You

Episode 25 Jun 21, 2021 1h 55m 12 insights
This episode explains how we sense chemicals through smell, taste, and pheromones. How things smell and taste and chemicals in the tears, breath, and on the skin of others have a profound effect on how we feel, what we do, and our hormones. I explain the 3 types of responses to smell, the 5 types of tastes, the possible existence of sixth taste sense, and how the act of sniffing can make us learn and focus better. I explain how smell and taste reflect brain health and can assess and even promote brain regeneration. I discuss how eating specific categories of foods makes us crave more of those foods, including how to make sour things taste sweet and develop a heightened sense of smell and taste.  Read the full show notes for this episode at hubermanlab.com.
Actionable Insights

1. Prioritize Nasal Breathing for Cognition

Practice nasal breathing during focused work, listening, or learning to increase alertness, attention, focus, and ability to remember information. The act of inhaling through the nose itself wakes up the brain and enhances learning.

2. Enhance Smell & Taste Sensitivity

To improve your sense of smell and taste, perform 10-15 nasal inhales (sniffs) followed by exhales, then smell an object like an orange or food. This practice increases brain alertness and olfactory neuron sensitivity, leading to richer perception and long-term discrimination ability.

3. Implement Near-Far Vision Exercises

Perform near-far viewing exercises for about five minutes, three times a week, to exercise the accommodation reflex and help offset myopia (nearsightedness). Bring an object close to your eyes, then look far into the distance, and repeat.

4. Spend Two Hours Daily Outdoors

Spend two hours outside daily, even while doing other activities like gardening or walking, to help offset myopia and nearsightedness. Sunlight and blue light from the sun benefit your visual system and brain.

5. Utilize NSDR for Energy Restoration

Use Non-Sleep Deep Rest (NSDR) protocols, such as those found in the Waking Up app, to greatly restore levels of cognitive and physical energy. Even short 10-minute sessions can be highly effective.

6. Maintain Optimal Hydration & Electrolytes

Ensure proper hydration and adequate electrolyte intake (sodium, magnesium, potassium) for optimal brain and body function, preventing diminished cognitive and physical performance. Consider dissolving one packet of Element in 16-32 ounces of water first thing in the morning and during exercise.

7. Cover Basic Nutritional Needs

Take an all-in-one vitamin-mineral probiotic drink like Athletic Greens once or twice a day to cover basic nutritional needs, address potential deficiencies, and support microbiome health. Supplement with Vitamin D3K2, essential for brain/body health and cardiovascular function.

8. Olfactory Training for TBI Recovery

If recovering from a traumatic brain injury (TBI), engage in active olfactory training by closely interacting with odors and focusing on inhales to wake up the brain and perceive nuances. This can stimulate new neuron creation and aid sensory performance recovery.

9. Actively Train Your Palate

Enhance your ability to taste and discern different components of foods by actively paying attention to what you are tasting. This practice can develop a more sensitive and nuanced palate over time.

10. Experiment with Miracle Berry

Ingest miracle berry (or miracle fruit) to temporarily alter taste perception, making sour foods taste sweet. This can help you understand the contribution of sweetness to various foods and explore taste perception.

11. Use Peppermint for Alertness

Inhale peppermint or other minty scents to increase attention and create an arousal response, which can heighten alertness. This effect is less intense than that of ammonia salts.

12. Consider Smelling Salts (Extreme Caution)

With extreme caution and professional guidance, ammonia inhalants (smelling salts) can trigger the brain’s arousal systems, leading to a ‘psyching up effect’ and increased maximal force in strength and power performance. Direct inhalation of ammonia can severely damage olfactory pathways and vision; use only with extreme care.