You've seen it all over celebrity Instagrams, whether its Britney on the beach or Beyonce in her back garden, celebrities love a good inversion. 

While it's an easy way to show off how much fun you're having on holiday, its also one of the best ways to keep fit.

Check out the top 5 reasons why you should introduce handstands into your daily life - wherever you are.

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@BarRafaeli

1. They build core strength

Remember planking?  Handstands are a lot more fun. Being upside down requires serious muscle stability, meaning you're actively working your abs, hip flexors, hamstrings, inner thighs, obliques and lower back. So rather than suffering through timed planks, try a handstand a few times a day. 

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@KateHudson

2. They increase your balance

It goes without saying, handstands aren't the easiest manoeuvres,  as you do need strength and balance. If you're trying one against a wall, you can use the wall to stabilise yourself. Freestanding, however, requires lots of muscle-use, which will increase your balancing abilities with plenty of practice.

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@Beyonce

3. They strengthen your upper body...a lot

If you're shaking, you're building muscle - any athlete will tell you that! To build up strength, hold the handstand against a wall for 10 seconds. See if you can work yourself up to one minute! Your shoulders, arms, and upper back with thank you.

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@AlessandraAmbrosio

4. They boost your mood

A massive plus to being upside down in general is you'll instantly boost your mood. The blood flow to your brain provides an energising effect which calms your body and mind. Inversions also reduce your cortisol levels (stress hormone), which helps with anxiety.

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@BritneySpears

5. They help with your circulation, breathing, and bones

Being upside down naturally increases circulation in the upper body, as well as increasing the blood flow to your lungs. Because handstands are a plyometric exercise (meaning own bodyweight bearing) they will strengthen your bones in your spine, shoulders, arms, and wrists. 

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@EllieGoulding