Why Sleep Is Important For Your Career Success

There’s lots happening unconsciously when we’re sleeping. We use to think it was passive but sleeping is a very active process when it comes to brain functioning. It’s also vital for our physical and mental health, our safety, survival, and work performance.

Quick Sleep Facts:

o    Physical Health: research shows that sleep problems relate to chronic health issues like diabetes, cardiovascular disease, immune deficiency, and hypertension. There’s also health risks that correlate with excessive amounts of sleep (Landolt, 2014).

o   Mental health: Sleep loss at chronic rates tend to lead to mental distress, depression, anxiety, and increased rates of alcohol use to manage symptoms. Sleeping well helps foster resilience (Freeman, 2017).

o    Being sleepy: if you’re driving or working in a physically-demanding job where you’re operating equipment, driving, or tending to medical patients, sleepiness can be dangerous.

What Is REM Sleep?

According to the Sleep Foundation (2022), Rapid Eye Movement (REM) plays an important role in memory, emotional processing, healthy brain development, dreaming and also muscle recovery. It’s the longest-lasting and final stage of our nightly sleep cycle, occurring right before you wake up in the morning. We experience 4 stages of sleep (REM sleep and three non-REM sleep stages), each one lasting approximately between 1 minute to 1 hour. This varies depending on your age and how much alcohol you consume.

Sleep Stages Type of Sleep Other Names Normal Length
Stage 1 NREM N1 1-5 minutes
Stage 2 NREM N2 10-60 minutes
Stage 3 NREM N3, Slow-Wave Sleep (SWS), Delta Sleep, Deep Sleep 20-40 minutes
Stage 4 REM REM Sleep 10-60 minutes

Reference for Table: Sleep Foundation (2022)

Circadian Rhythm

Your Circadian Rhythm is a central aspect of sleep hygiene because it’s what dictates our regular hormone production in response to light and darkness. When it’s dark, melatonin (a hormone) is secreted by our brains and helps us sleep. Some describe taking melatonin supplements as ingesting a “dose of nighttime” ( talk to your health care provider for further information on supplementation related to sleep). When it’s light out, we naturally make less melatonin since we need to be alert. If you experience too little light in the day (ie. shift work, poor vision) or too much light at night (ie. screen time, TV) this can disrupt the cycle.

Now that you understand how sleep works, check out these 12 sleep tips Sleep Hygiene Guide 101.



Landolt, H. P., Holst, S. C., Sousek, A., Bassetti, C., Dogas, Z., & Peigneux, P. (2014). Effects of acute and chronic sleep deprivation.

Freeman, D., Sheaves, B., Goodwin, G. M., Yu, L. M., Nickless, A., Harrison, P. J., … & Espie, C. A. (2017). The effects of improving sleep on mental health (OASIS): a randomized controlled trial with mediation analysis. The Lancet Psychiatry, 4(10), 749-758.

Sleep Foundation. (2022). Stages of Sleep. Retrieved from https://www.sleepfoundation.org/stages-of-sleep


By Laura Cohen, a Career Counsellor at Canada Career Counselling Halifax location. Laura has completed an MA in Counselling Psychology from McGill University. She is experienced working with clients in numerous industries including finance, the military, business and education, the non-profit and arts sector, IT and healthcare. Email our office at [email protected] to schedule a 15-minute complimentary consultation. You may be able to use your insurance plan or extended health benefits to cover counselling and assessment fees.