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"You're moody as hell." 5 things people born in the summer months have in common.

I’m a summer baby through and through. My favourite things in life are ocean-, outdoor- and view-related.

I hate layers (a.k.a. winter clothes) and I love salty hair (a.k.a. spending all day every day at the beach).

I’ve always known my month of birth (February) weirdly matches my personality, but it turns out science thinks so too.

Video by Mamamia

Believe it or not, whether you were born in autumn, spring, winter or summer impacts what kind of human you grow up to be. Cool, right?

But it’s not just about generally liking the season itself, apparently being birthed into the world between December and February affects everything from your height to your mood.

Here are all the things all summer babes know to be true. (Warning: they’re weirdly accurate.)

1. You’ve got a stronger internal clock.

You’re the kind of person that wakes up before your alarm because your body just knows.

According to research done by Vanderbilt University researchers, light signals can shape the development of our biological clocks.

Thanks to this development, summer babies are also less likely to feel the effects of Seasonal Affective Disorder.

2. You’re moody as hell.

If you’re born in summer, you’re more likely to be prone to mood swings and larger swings in temperament.

Why?

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According to the European College of Neuropsychopharmacology, the month you’re born in affects your levels of dopamine and serotonin, which are the chemicals that determine happiness and sadness.

The study wants to make something clear, however: this is not astrology – it’s seasonal biology, and it’s very real.

Your tendency to feel greater extremes of mood also means you might be more likely to develop certain mood disorders.

3. You’re a glass-half-full kinda person.

With these mood swings comes a tendency to be very positive, sometimes excessively so.

Semmelweis University researchers say this is because of something called “hyperthymic temperament,” which literally means a personality type characterised by an exceptionally positive disposition.

4. You’re more likely to be tall.

Apparently, if your mum absorbs more sunlight and Vitamin D in the second and third trimesters, it gives you a bit of a head start in the growth stakes and you’re more likely to be strong and tall.

The University of Cambridge study found summer babies are 10 per cent less likely to be short in stature.

It means on average, those born in winter are three millimetres shorter than their summer-born counterparts.

5. You’re later to the puberty party.

So, you might get the early growth spurts, but apparently you’re more likely to be the last in the class to hit puberty.

A UK biobank study found the trend true in girls in particular, and the researchers think this phenomenon is also down to how much more sunlight you get in the womb towards the end of your time in utero.

Coming into puberty late has actually been found to be a good thing. University of Cambridge says those who go through it earlier are more likely to have heart disease and type 2 diabetes. (by more likely, we’re talking a 50 per cent higher chance.)

FYI, 8-11 is considered early, and 15-19 is considered late.

If you’re a summer baby, or dating/the daughter of/working beside a summer baby – do these things ring true? Let us know in the comments below.

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