What Is Building A Second Brain & How To Build

There are two ways to explain what the second brain is: Generally speaking, the second brain is a way to preserve and manage our knowledge, inspiration, and insights through digital note taking software or a note management system that expands our memory and intellect to better manage and use our knowledge and increase productivity.

Biologically, the enteric nervous system is the second brain of the human body since it contains neurons and neurotransmitters similar to those found in the central nervous system.

The primary purpose of this site is to introduce different methods of note-taking and ways to improve productivity. We will discuss how taking digital notes can act as a second brain, and will also touch upon the human second brain if anyone is interested.

What Is "Building A Second Brain"

Building a second brain or in short "BASB", this is a method or note management system that systematically writes down and saves and manages our knowledge, inspiration, and insights through digital note taking software.

What Is "Building A Second Brain" in inforgraphic explain

Compared to the human brain, which has a limited memory, this method can be used to expand our memory and intellect using modern technology and web-based tools, hence the name second brain. Software in itself is critical, but what matters more is the thinking behind it.

Well, now you know it, this is basiclly a knowledge management system of yourself.

How To Build A Second Brain: 3 Steps

BASB, short for build a second brain, is a way to preserve and systematically remind us of the ideas, inspirations, insights, and connections we have gained from our experiences. According to Tiago Forte's website, there are three main steps to building a second brain.

  • Part 1: Remember
  • Part 2: Connect
  • Part 3: Create

These are all the steps you need to build a second brain, which I will explain below.

 How To Build A Second Brain: 3 Steps -Remember,Connect,Create

Part 1: Remember

The process of keeping several pieces of valuable information in one place is remembering. You can save your notes in different digital note-taking software like Evernote, notion, obsidian, Microsoft OneNote, Bear, etc. Saving can be in the form of storing hyperlinks, images, web pages, screenshots, PDFs and other attachments, all of which are permanently saved and synchronized across all your devices.

Filtering the information is critical, not keeping everything. You'll have to select and choose wisely. You should pick high-value, impactful information that is valuable, and those that are recurring themes and issues, and save anything that "resonates" with you on an intuitive level. This is usually because it relates to something you care about, are curious about, or find intrinsically interesting.

Part 2: Connections

You should pay attention to the intrinsic connections in the knowledge you have gathered, and review your notes often to distill the main points. It is important to summarise your notes at various stages of time.Using your understanding, summarize the original notes into excerpts, then summarize the excerpts again.

This can be understood as a step-by-step condensation process, but you will need to incorporate your thinking about your knowledge in this process. This makes it easy for you to look at this content within seconds and determine if it is useful to your current task, i.e., if it creates a connection.

Part 3: Create

Creating is the process of exporting the content from your notes to create tangible results in the real world. It doesn't matter if it's a written piece, a website, a photo, a video or a live performance - all convey the knowledge we've gained from our experiences. Bringing something real, beautiful, meaningful into existence makes you feel rewarded.

At the same time, by consistently sharing your work with others - whether it's your family, friends, colleagues, or outside on social media - all kinds of benefits will begin to materialize. You will connect with new collaborators who you never thought would find your work compelling. From there, your note taking system will impact and improve your life.

Why Building A Second Brain Is Beneficial

First let's talk about what building a second brain solves.

We are in an age of information explosion with emails, text messages, messaging apps, online articles, books, podcasts, webinars, memos, and more.

 overwhelming digital informations

All of these types of content have value, but trying to remember them all is overwhelming and impractical.

Building a second brain shifts the mind to a "second brain" where we can free our biological brains to imagine, create and simply exist.

The benefits we would gain are

  • Manage personal information flow to reduce stress and "information overload"
  • Gain valuable expertise, professional knowledge, and skills that can be used in a new career, business, or job
  • Unleash the full value of the wealth of learning resources around you, such as online courses, webinars, books, articles, forums and podcasts
  • Take advantage of the fast-growing knowledge economy and turn your personal knowledge into income
  • Manage your projects and goals and consistently execute them to completion
  • Manage your inspiration and discover the connections between unexpected ideas

Additional: the second brain of the human body

your second brain in the gut

When we talk about the second brain of the human body, it means Because the enteric nervous system relies on the same types of neurons and neurotransmitters as the central nervous system, some medical professionals call it our "second brain. The "second brain" in our gut communicates with the brain in our head and plays a key role in certain diseases in our body.

Your gut's main connection to the brain is the vagus nerve. This nerve also controls messages sent to the heart, lungs and other organs. In addition, hormones and other neurotransmitters travel along the gut-brain axis, sending messages in a chemical manner.

You feel fight or flight responses and nervousness before you give a presentation due to the gut-brain link. When you feel anxiety or depression, it can cause intestinal distress, leading to problems with your stomach or bowels.ain link, the reverse can also be true - that your gut health is affecting your mental and physical health. This can cause intestinal distress, causing problems in the stomach or bowels.


To sum up, I think that the second part of building a second brain note-taking system, the "connection" part, needs further study, and this is the core of it. If you are also interested in this topic, please leave a comment below, and if you find this article useful, please share this article with your family and friends.