This week's experiment involved lying on a piece of grass and staring at the sky. As simple as that.

Over the past few years I've done this a lot during the summer when the weather has been good. I've found that it helps when I'm stressed as it brings a feeling of calm into my life.

And I definitely felt that way when I tried it this week too.

There's something about lying back, feeling the warmth of the sun on my face and the grass on my back, and looking out into the vastness of the sky that is really relaxing.

I watch the birds flying around and wonder what that must be like.

I see the planes passing overhead leaving trails behind them. I think of all the people inside who are travelling to new and exciting destinations, places I've only ever heard of but never been to myself.

I look at the clouds in their different shapes floating gently across the sky.

Watching all this helps put my worries into context. It makes me realise how big the world is, how much is going on out there, and how lost and caught up I can get in my own little piece of it. It helps to see that my worries aren't usually as big as I'd thought.

It's fascinating how such a simple act can help me to feel genuinely relaxed, content and more aware.