(The 7 yogic chakras, interpreted by Plato and his Greek supporters)

I once read somewhere that people way back in the Greek and Roman empire era once believed that your organs induced emotional states of being, something about blood (sanguine) insinuating happiness and the bile from the spleen aggravating temperament.  So due to my uncanny interest, I did some research and found a few more explanations of the once accepted/practiced Greek medicinal belief of the connection between our insides and our outsides at http://www.greekmedicine.net/hygiene/Emotions_and_Organs.html:

 Heart:  The heart, being the principal organ of the Vital Faculty, is very sensitive to emotional states.  Noble, expansive, uplifting emotions like courage, valor, honesty, forthrightness, altruism and compassion strengthen the heart and Vital Spirits, whereas ignoble, constrictive, base emotions like cowardice, timidity, guilt, remorse, deceit and duplicity weaken them.  Love and the emotional will to live are also very important to the heart; according to Greek Medicine, you CAN die of a broken heart.  The heart, being the hottest organ in the body, is also very vulnerable to hot, turbulent passions, which can agitate the Vital Spirits to such an extent that they create a fever, which can be quite high and acute; Greek Medicine calls these fevers of energetic or emotional origin ephemeral fevers.
     Lungs:  The lungs, being an important noble organ of the Vital Faculty that works closely together with the heart, are sensitive and vulnerable to many of the same emotional states as the heart, and respond similarly.  The lungs need a feeling of psychic space within which to function; the phrase, "breathing room" is a common expression.  The feeling of being smothered, invalidated, or denied one's psychic space can constrict the lungs and cause respiratory problems like dyspnea and asthma.  Conversely, a feeling of dignity and pride puffs up the chest, and allows the lungs to expand and function properly.  Negative emotions that sap the will to live are also injurious to the lungs, especially grief and bereavement; many chronic respiratory diseases and conditions develop after a major loss or bereavement.  
     Liver, Gall Bladder:  Bile is produced by the liver and stored in the gall bladder, which makes these two organs vulnerable to negative Choleric emotions like anger, irritability, frustration, resentment, jealousy and envy.  These negative Choleric emotions are stored in these organs, and can slowly eat away at them if allowed to fester.  Anger and rage can explode upwards from the liver into the head, causing a lot of havoc in their wake: headaches, migraines; red, sore, bloodshot eyes; and muscular tension in the neck and shoulders.  Nervous and emotional tension and stress, as well as Melancholic emotions like pensiveness and worry, will stagnate the flow of the Natural Force in the liver, which in turn causes nervous, colicky, Melancholic disturbances of the digestive functions.  This excess melancholy often accumulates under the lower ribs, giving a stuffy, distended, congested feeling in the whole chest and diaphragm area.  This is the origin of the term hypochondriac.
     Spleen:  The spleen is the storage receptacle for black bile.  And so, it is adversely affected by negative Melancholic emotions like pensiveness, anxiety, worry and depression, which unduly constrict the free flow of the Natural Force through the digestive system and aggravate the Retentive Virtue, producing colic, gas, distension and bloating throughout the entire abdominal area.  Actually a trio of subdiaphragmatic digestive organs can be adversely affected by negative Melancholic emotional states: the liver on the right, the spleen on the left, and the stomach in the middle.  
     Female Reproductive Organs:  Optimal female sexual response depends on a warm feeling of emotional closeness and intimacy with her partner.  If this trust and intimacy are violated, there will be emotional trauma that can adversely affect female sexual health and response.  This is not an absolute, all-or-nothing matter; there are many degrees of violation, ranging from a subliminal lack of proper tact and sensitivity in the male to outright rape and physical violation.  These negative experiences will traumatize the woman, to a greater or lesser degree, depending on their severity, provoking feelings of fear and anxiety which will further inhibit sexual functioning and response.  This is often called frigidity, and closes down the woman's feelings and receptivity to orgasm.  Many women have had to disconnect emotionally from their sexual organs and their functioning as the only way of coping with a sexual life or circumstances that are completely unsatisfying and uninspiring.  Losing a pregnancy also brings an aura of great grief and sadness to the female organs, and to the woman herself; many women take a long time to heal emotionally from a miscarriage or an abortion.    
     Brain:  The brain comes last in our discussion of the emotional life of the organs because it's often the effect of humoral and metabolic imbalances arising elsewhere in the body, which send subtle vapors up to the brain to influence its functioning.  Choleric vapors agitate, irritate and inflame, provoking anger, rage, envy, jealousy, or irritability.  Warm, moist Sanguine vapors can stir up feelings of wellbeing, pleasure, sensuality or even lust.  Melancholic vapors provoke feelings of prudence, caution, pensiveness, worry and withdrawal.  Cold, wet Phlegmatic vapors will dull or fog up the brain, producing mental lethargy and dullness, or they will cloud objective thinking with excessive sentiment and subjectivity.  However, the brain is not all effect; it can also be cause, since the kinds of thoughts that it habitually thinks can have a profound impact on the heart and its Vital Spirits, and hence on the entire Vital Faculty, for better or worse.  And so, we have come full circle, and again return to the heart.

Thank David K. Osborn from greekmedicine.net for this one.  Tremendous insight into the origin of our internal/external relationship which we have been able to dissect more completely with advancements in neuroscience and psycho-experimentation.  

Anyways, where I was getting with this was that I can actually feel sensations in my heart due to emotional reactions to thoughts or situations.  OK, so the four sensations are excitement, warmth, painful stabbing, and melancholy... how I piece these together will be difficult to comprehend to some but most people should be able to relate.

Excitement.  Whenever I am excited (whether it be an adrenaline rush or hormonal stimulation) I tend to get a tingly feel which seems like my cells are flickering and tickling my heart.  Example: whenever Crista makes me feel special (by spending all day talking with me, doing a huge huge unnecessary but necessary favor for me, or just by being her and turning me on etc.) I get that feeling in my heart and it sends shivers through my body at times.  I love this feeling... though it is more rare than the others just because of the nature of beginnings to lifetime relationships.

Warmth.  Like the passing of hot coffee or chocolate down your esophagus and through your large intestine/stomach, except in your heart.  Example:  Whenever I am relieved of having a situation almost turn horrible and having it turn out quite OK, like if I pour decaf thinking that it's caffeinated coffee and find a caffeine pill sitting unattended by a coffee pot which I quickly utilize to correct the mistake... which by the way has never happened but I thought it would be cool if something like that did happen.  This feeling is more of a secure one, providing me with the support to let me know that I am in fact OK.

Painful stabbing.  Like the twisting of your liver once you have overdosed on your alcohol intake for one night, except it is like a stringed pull of all 4 chambers resulting in a closing of the 4 valves in your heart.  Example: A shocking feeling of disappointment or regret usually provides the jab.  Like when I was arrested in Ohio and it felt like my heart dropped, it was actually just such a shocking event that I think all the blood from my heart kind of went to my brain and for a brief moment it felt like I was having a heart attack.  This feeling sucks, plain and simple... and if strong enough I have a feeling it can induce a stroke of some sort.

Melancholy.  This one is special, it feels like your blood is moving slower than you can imagine while part by part your heart is dissolving into your body and continuing a circulation with no origin.  Example: When I feel: misunderstood by/like I'm on a different playing field than/ the rest of the human beings on planet earth it gives me a tremendous feeling of depression, which hollows out my insides and makes me feel obsolete.  Luckily, I am accustomed to this sort of feeling due to the chemicals I have ingested during my experimental moments (which has resulted in a mild case of Serotonin Syndrome).  This feeling is one of commonplace, although it isn't the healthiest feeling in the world it has been a feeling that has brought modesty and gratitude to my life.  

The Greeks had the idea nabbed down, but assigned the weirdest cause and reaction relationships to our daily feelings.  Well off to a superhero costume party now, will take one or two photos if I'm feeling gay enough.  Peace.