We know what time you’re in a good mood (and what time you’re grumpy!)

A study published in the journal PLOS Digital Health A study conducted by the University of Michigan and Dartmouth Health looked at the mood cycles of medical residents, studying Fitbit (electronic coach) data from more than 2,500 physician trainers (residents) over two years.

In a good mood at the end of the day

Research has shown that self-reported mood cycles reach their lowest point around 5 a.m. and their highest point around 5 p.m.Mood naturally fluctuates with a low point in the morning and a high point in the evening, regardless of sleep deprivation. Sleep deprivation is a separate process that further lowers mood.”said Benjamin Shapiro, lead author of the study and a psychiatrist at Dartmouth Health.

The study examined several points:

• Heart rate;
• The number of steps;
• Sleep data;
• Daily mood scores.

The influence of circadian rhythm on mood

Thus, the study provides empirical evidence of how circadian rhythms and sleep deprivation impact mood, providing insight into emotion management in stressful occupations.”We found that mood follows a rhythm linked to the body’s internal clock, and that the influence of the clock increases as a person stays awake longer.” said Danny Forger, lead author of the study and professor of mathematics, computational medicine and bioinformatics at the U-M School of Medicine.The study highlights the important role our biological clock plays in mood and presents wearable technology as an exciting new way to explore these factors in mental health issues.” he added.

Although the study has limitations, researchers applaud the power of technology, such as the Fitbit or other smartwatches, to measure mood disorders.

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