Now we know that our gut is often referred to as our second brain, and has such a close connection to our emotions and physical health.

But the gut (second brain) is also way more intuitive than our first brain and let me tell you, after the experience I had while doing a course in NZ, I should have listened to my second brain. You know when you’re really not sure about doing something, as you’re not sure about the person you are dealing with, there’s that hesitation, umming and aahing, a strange feeling in the pit of your stomach, it feels a bit risky, yet someone or the sales person is winning you over, convincing you what you are doing is going to be fantastic and beyond.

But oh, that sinking feeling when the reality is when all your hesitations, and “not sure” moments come true, and any expectations you may have had, are not met.

I am kicking myself now for not trusting my gut instinct after being duped out of a substantial amount of money.

Not surprisingly, this led me to do a bit more research into what does trusting our gut instinct really mean and how do we learn how to use it more often?

Here’s a great article I found by Megan from Experience Life: //www.care2.com/greenliving
on 4 Gut Instincts you Should Not Ignore:

The quirky urge. A funny tingle. That little voice in your head. These are your gut feelings talking. But what are they telling you, and should you listen? Here’s how to make the most of your own innate wisdom.

Most of us have experienced the sense of knowing things before we know them, even if we can’t explain how. You hesitate at a green light and miss getting hit by a speeding truck. You decide on a whim to break your no-blind-dates policy and wind up meeting your life partner. You have a hunch that you should invest in a little online startup and it becomes Google.

If only you could tap into those insights more often, right? Turns out you can, especially if you learn to identify which signals to focus on — whether they’re sweaty palms, a funny feeling in your stomach, or a sudden and inexplicable certainty that something is up.

According to many researchers, intuition is far more material than it seems. Hope College social psychologist David Myers, PhD, explains that the intuitive right brain is almost always “reading” your surroundings, even when your conscious left brain is otherwise engaged. The body can register this information while the conscious mind remains blissfully unaware of what’s going on.

Another theory suggests you can “feel” approaching events specifically because of your dopamine neurons. “The jitters of dopamine help keep track of reality, alerting us to those subtle patterns that we can’t consciously detect,” Jonah Lehrer, author of How We Decide (Houghton Mifflin, 2009) notes.

So how do you choose which gut feelings to trust? Judith Orloff, PhD, a Los Angeles–based intuitive psychiatrist and author of Second Sight (Three Rivers Press, 2010), suggests that it’s a matter of “combining the linear mind and intuition,” and striking the right balance between gut instinct and rational thinking. Once you’ve noticed an intuitive hit, she says, you can engage your rational mind to weigh your choices and decide how best to act on them.

To that end, here are five gut feelings that Orloff and other experts recommend you pay attention to — and some reasons why you’ll be glad you did.

“Something feels wrong in my body.”

Listening to your body’s subtle signals is a critical part of exercising your intuitive sense, says Orloff, who also trains UCLA medical students and psychiatric residents to use intuition when treating patients.

“Your body is a powerful intuitive communicator,” she explains in Second Sight. “Intuition allows you to get the first warning signs when anything is off in your body so that you can address it. If you have a gut feeling about your body — that something is toxic, weak or ‘off’ — listen to it. Go and get it worked up.” She’s seen too many people ignore their sense that something isn’t right with their bodies, and subsequently find that small problems have become big ones.

Physical symptoms can also have symbolic value. “If you’re around somebody and your energy goes down, that’s an intuition not to ignore,” Orloff says. Sudden sleepiness can mean that you’re in the presence of an energy-draining person or circumstance; it can be your body’s way of communicating that these conditions are taking more energy than they give. If you stay in a situation that makes you feel instantly depleted (like taking a job after you left the interview feeling exhausted), it can easily lead to a situation where you become depressed, anxious and — not surprisingly — stuck.

Ronald A. Alexander, PhD, a psychologist, mindfulness expert, leadership consultant, and director of the Open Mind Training Institute in Santa Monica, Calif., also recommends paying close attention to any sudden physical sensations you experience during the course of an interaction. He tells a story of traveling in India where he decided not to get in a cab because of a “burning sensation” in his gut, and he later saw the driver being arrested in the train station for suspected robbery. He says he typically feels intuitions in his chest or his stomach; the latter is relatively common given that the intestines house the enteric nervous system, sometimes called the “second brain.”

“That second brain really is the intuitive brain,” Alexander explains, and he recommends that when it speaks, you listen.

“I’m in danger.”

The feeling you get about a person in the first 10 seconds expresses an “ancient biological wisdom,” says Myers in his book Intuition: Its Powers and Perils (Yale University Press, 2002). Early humans who could speedily detect whether a stranger was friend or foe were more likely to survive, he says, and they would create descendents who were able to read emotional signals in another person’s face almost instantly.

Of course, the human capacity to judge can go badly awry, as it did in the 1999 fatal police shooting of Amadou Diallo in New York City. Police fired when they thought the young Guinean man was reaching for a weapon, but he was actually unarmed and digging in his pocket for his identification.

Because social conditioning helps to create unconscious beliefs, and these beliefs can produce first impressions and snap decisions that are utterly flawed, Orloff suggests that it’s important to check your gut feelings against your rational mind whenever possible. And there are simple ways you can attend to what feels like a warning signal in the short term, she says.

“If you don’t trust somebody, even if it turns out to be inaccurate, it is something to pay attention to,” she explains. “If you’re walking down the street at night and you get the feeling ‘stay away from that person,’ just cross the street.”

“I want to help.”

While you might think of our gut instincts as something we’ve maintained mostly to avoid danger, the human species has evolved an equally powerful capacity to sense when our fellow beings need support. “Sympathy is one of humanity’s most basic instincts, which is why evolution lavished so much attention on the parts of the brain that help us think about what other people are feeling,” notes Lehrer.

Since evolution has made you a quick read of other faces and their emotional signals, you don’t always need to wait for a verbalized cue before you reach out. The sympathy instinct nudges you to change the subject when wedding talk makes a newly divorced colleague cringe, or to start up a conversation with a nervous seatmate during an airplane landing — subtle gestures that can make a big difference in someone’s day. The capacity to empathetically identify with other faces can even be what compels you to donate money after a natural disaster. Studies of humanitarian relief efforts show that people are markedly more compelled to give after seeing a photo of an individual in need than after reading statistics about damage.

Finally, this ability to “read” other faces isn’t just good for those you help. One recent brain-imaging study suggests that generosity makes the pleasure centers in the brain light up like the Las Vegas Strip. When participants were given $128 of hard cash along with the choice to keep it or donate it to charity, the reward centers of those who chose to donate went wild.

Multiple studies have also demonstrated a phenomenon known as the “helper’s high,” which causes individuals aiding others to experience improvements in mood, immunity and overall well-being. That’s why following your instincts for sympathy and generosity generally turns out to be a good investment in your own health and happiness, too.

“This is it!”

When your intuition signals that you’ve found something or someone truly right for you, the choice often becomes strangely easy. “It feels healthy; it feels good; it doesn’t feel like you’re forcing it, there’s not a lot of conflict,” says Orloff.

Lehrer agrees that when you’re poised to make a big decision with lasting repercussions, like choosing your life partner, you’re best off deciding from the gut. Based on the bulk of his research into the cognitive mechanisms of decision-making, he actually recommends that you “think less about those choices that you care a lot about.”

According to Lehrer, the rational mind is really suited only to limited concrete choices, like deciding between two brands of car insurance. In situations where there are just a couple of relevant factors involved, the prefrontal cortex can weigh the comparative rewards of each and yield an excellent result. But there are so many factors involved in a complex decision like, say, buying a house, that the limited space in the prefrontal cortex gets overwhelmed. In that state, it becomes the wrong part of the brain for the job.

Several studies support the wisdom of emotional decision-making in the realm of big choices. In one study, Dutch researchers shadowed shoppers at IKEA, observing their shopping behaviors. Later interviews indicated that those who spent less time making their choices ended up more satisfied overall. Choosing a couch and choosing a spouse are decidedly different acts, to be sure, but both tend to provoke the kind of agonized overthinking that leads to poor choices. Using your intuitive brain in these situations, on the other hand, will almost always point you toward a lasting fulfillment.

Of all the reasons to use your gut instincts to make big decisions, this may be the best: It leads to the choices that are most fully satisfying — decisions that can improve the quality of your life.

“It allows you to find relationships that resonate for you, instead of what looks good on paper,” Orloff says. “It allows you to connect with people on a heart level, it allows you to deeply experience life instead of just letting it wash over you, and it allows you to be really smart about how you make your decisions.”

Have you had any experiences where you have trusted your gut instinct and its led you out of danger? Feel free to leave some feedback in the comments section down below!