For example, a study published in the Journal of Experimental Psychology in February 2014 reported that when you feel powerless, the objects you hold seem heavier than they really are. That's probably a self-defense mechanism to protect people who feel powerless from overextending themselves.

- A study published in the journal Emotion in 2013 proved that when you're in love, both food and drinks (including distilled water!) taste sweeter.

- Anger increases the blood circulation to your limbs and your heart, which, in turn, doesn't let you fall asleep.

- People who feel lonely, sad, or excluded tend to estimate the temperature around them as a few degrees colder than it really is. This makes them long for hot food and beverages to compensate for the unwanted emotion.

- Your mind is closely connected to your skin. That's why most of those negative emotions you feel are reflected on your face.

- Researchers from the University of Pavia in Italy declare that when you fall in love, your body has an increased level of nerve growth factor for the whole following year.

- If you're unable to suppress your disgust, don't feel bad about it! This feeling is one of the most difficult to overcome. When you're disgusted, your heart rate slows down, and you experience nausea. You may also feel like there’s something wrong with your stomach.

- Cardiologists from the University of Maryland Medical Center have figured out that laughter decreases the risk of heart attacks. This happens because you lower the levels of stress hormones in your body when you laugh.

- Jealousy is one of the most unwanted — but extremely strong — human emotions. Since it's a mix of anger, stress, and fear, jealousy can lead to elevated adrenaline levels and increased heart rate and blood pressure.

- The emotions you feel when you are grateful trigger oxytocin. As a result, your immune system becomes stronger, and your blood pressure decreases. Plus, the healing processes in your body speed up.

- When you're afraid, you become pale because the blood drains from your face. The main reason is the activity of your autonomic nervous system, which controls your fight-or-flight response.

- Every time you express your feelings of love and affection to your partner, your cholesterol levels go down. This conclusion was drawn in a study published in the journal Human Communication Research.

- Toxic shame, which typically comes from the past, causes overproduction of the primary stress hormone: cortisol. As a result, you may suffer from constricted arteries and, consequently, an elevated heart rate.

- When you argue, your body produces more cytokines, immune molecules that can trigger inflammation. If there are high levels of cytokines in your body, it can lead to cancer, heart disease, and arthritis.

- Scientists from Stanford University School of Medicine discovered that short-term stress can strengthen your immune system and increase the levels of molecules that can fight cancer. Such a positive effect lasts for several weeks after a stressful event.

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