That would be serotonin.
Darren mentioned over on his blog that we should take more notice of our local environment. I actually do most of my walking locally. And alone, but that’s ok.
I needed a lift today, mental, not physical, so I went for a local walk so that I could at least see the hills and here are some photographs of the hills I could see.
The hills, anti-clockwise from the North Easterly view down to the Southerly view. On a good day.