People who sleep for short periods of time and go to bed very late at night are often overwhelmed with more negative thoughts than those who keep more regular sleeping hours, according to a recent study by researchers at Binghamton University in New York.

While previous studies have linked sleep problems with repetitive negative thoughts – similar to those that are symptomatic of anxiety disorders, depression, post-traumatic stress disorder, obsessive compulsive disorder and social anxiety disorders – the latest research has linked the repetitive negative thoughts and the actual time someone goes to bed.

Published in the journal Cognitive Therapy and Research, scientists Jacob Nota and Meredith Coles asked 100 young adults at Binghamton University to complete questionnaires and two computerised tasks, according to PsychCentral.

The researchers used three measures to gauge negative thinking: how much the students worry, ruminate or obsess about something.

Students were also asked whether they were more habitual morning or evening types.

The study found that people who sleep for shorter periods of time and go to bed later often experience more negative thoughts than others. This was true for those students who described themselves as evening types.

This therefore suggests that sleep disruption may be linked to the development of repetitive negative thinking – something which could be addressed in spas.

While the researchers suggest that people who are at risk of developing a disorder characterised by such intrusive thoughts should focus on getting enough sleep, clearly it is important that everyone gets enough shut-eye.

“Making sure that sleep is obtained during the right time of day may be an inexpensive and easily accessible intervention for individuals who are bothered by intrusive thoughts,” said Nota.

Six Senses Spas is an example of a spa operator that has recognised the opportunity sleep provides in the wellness industry. Along with its recently-launched yoga programmes, the management company has unveiled a whole new range of sleep treatments.

The US day spa franchise Woodhouse Day Spa is also expected to introduce sleep improvement treatments in January 2015 and the Four Seasons Resort Maldives at Landaa Giraavaru has launched a sleep-enhancing ritual at its night spa, designed by skincare brand ila.