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HRV warnings even though it’s consistently 100+?

Community for users of the Oura Ring wearable.

How to create this overexposed effect - is it a camera setting or post? Or both?

/r/photography is a place to politely discuss the tools, technique, art and culture of photography and to post topics that would be of interest to other photographers.

3 mystery rocks found on Aberystwyth beach, Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿

Dedicated to identifying mysterious rocks and minerals.

Is this a fossil? Found on Aberystwyth beach, Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿

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Found a fossil? Submit a post here containing a few images, and we'll figure out what it is!

Thought you guys would appreciate this tiny mountain 🏔️ found in Theth, Albania

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The scientific study of the origin, history, and structure of the Earth.

Found in Theth National Park, Albania. Looks like a tiny mountain 🏔️

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Dedicated to identifying mysterious rocks and minerals.

Found on Folkestone beach (UK) and slightly iridescent. Any ideas?

Dedicated to identifying mysterious rocks and minerals.

Found in my garden in London, UK. Any ideas? Baffled by the 3rd one

Dedicated to identifying mysterious rocks and minerals.

Found in my garden in London, UK. What are they and how on EARTH did they get there?!

Found a fossil? Submit a post here containing a few images, and we'll figure out what it is!

Found these in Patagonia, near El Chaltén. Can you smart people help me ID them?

Dedicated to identifying mysterious rocks and minerals.

Wisdom on growing out bleached hair?

A strictly SFW subreddit to share and discuss long hair. Please read the sub rules before posting or commenting. Thanks!

Slime on my water kefir - normal or dangerous?

Welcome to r/fermentation! This community is devoted to the craft, science, and culture of fermentation. From sauerkraut and sourdough to kombucha, kimchi, yogurt, and beyond, we explore the traditions and innovations that bring microbes, time, and ingredients together. Our aim is to promote safe, accurate, and inspiring fermentation practices while fostering curiosity, creativity, and shared knowledge for beginners and experts alike.

HCM in cats - possible human drug cure. Cardiologists, I need your help!

A subreddit covering the evolving evidence base in cardiology and cardiothoracic surgery. This subreddit is for medical professionals only. DO NOT ASK FOR MEDICAL ADVICE OR OPINION.

HCM - possible cure. Need your help!

Owners, lovers, and all things related to the awesome cat breed: The Maine Coon! This community is for pure bred Maine Coons only, not mixes.