Sleeping in an ideal temperature range has been considered crucial for deep REM cycles and good sleep hygiene. However, research suggests that this ideal may change as we age. A recent study from Griffith University in Australia found that adults over 65 who slept in a warmer bedroom (75 degrees Fahrenheit) experienced less stress-related changes in their hearts compared to those sleeping in cooler temperatures.
In older adults, heat can put extra pressure on the heart, increasing its rate and workload. This strain can lead to stress and reduce recovery from previous day’s exposure. The study also found that warmer bedrooms were linked to higher heart rates and signs of stress during sleep.
The findings have important implications for cardiovascular health, as sleep deprivation can physically alter the internal chemistry that keeps the heart beating. Prolonged sleep deprivation can cause impaired glucose metabolism, chronic inflammation, and high blood pressure, all of which increase the risk of heart attacks and strokes.
To apply this data to their nightly routine, older adults can try the following tips: monitoring the room temperature, prioritizing airflow, choosing natural fibers for bedding, hydrating early in the day, and tapering off fluids before bedtime. By recognizing that a slightly warmer, stable environment may be beneficial for heart health, we can take control of our sleep and indoor climate to prevent cardiovascular morbidity and mortality.
Source: https://blackdoctor.org/why-bedroom-temperature-matters-for-sleep