Sometimes anxiety arrives without warning, not in response to something specific, nor a genuine threat, but the free-floating kind that descends in the middle of an ordinary Tuesday, in a meeting, at a dinner table or whilst standing in the supermarket and fills your body with a quality of dread that has no clear address.

Here are the four things I do, because they work and are available to you anywhere, anytime, without equipment, medication or anyone around you knowing you are doing them.

For decades we have been told a very simple story about cholesterol. HDL is the good cholesterol. LDL is the bad cholesterol. If LDL is high you are in danger and if HDL is high you are protected but like many things in health, the truth is far more nuanced.