I see time as a grid in my mind. I remember the birthdays of friends I haven’t seen for 65 years

Judy Stokes, a retired GP, shares her experience of spatial-sequence synaesthesia

As a student, he was involved in a drunk-driving incident that killed a cyclist. Years later he would become expert in the healing powers of guilt

Psychologist Chris Moore saw first-hand how powerful and complex an emotion it is

I taste words. ‘Bob’ is like a milk chocolate Easter egg on my tongue

Monique Todorovski, a clinical administrator, shares her experience of lexical-gustatory synaesthesia

The secrets of the body clock: how to tune into your natural rhythms – and have a better day

Our circadian cycle doesn’t just affect our sleeping and waking, but our motivations, mood, behaviour and alertness. Whether you are a lark or an owl, here’s how to recognise your own rhythm

‘A potential treasure trove’: World Health Organization to explore benefits of traditional medicines

UN body to study possibility of integrating centuries-old practices into mainstream healthcare

New antibiotics hailed as ‘turning point’ in treating drug-resistant gonorrhoea

First new treatments for sexually transmitted disease in decades approved by US Food and Drug Administration as number of cases worldwide surge to 82m

Endings are hard, but facing them helps us to heal

I understand the temptation to run away – I have felt it too. Try to stay in the room, and in the moment. You’ll be glad you did

Could a drug for narcolepsy change the world?

There are apparently breakthroughs on the way for those with sleep disorders – which sent me down a rabbit hole of research, writes Zoe Williams

Does ‘laziness’ start in the brain?

Understanding the surprising mechanism behind apathy can help unlock scientific ways to boost your motivation

Why do people love spicy food – even when it hurts to eat it?

Tearing up, sweating and other bodily functions are all signs that the body is trying to expel spicy foods as quickly as possible. But there is a simple reason why some people enjoy those sensations