This study examined how different types of sleepwear and bedding (cotton vs. wool and polyester vs. wool) affected sleep quality under ambient temperatures of 17°C and 22°C. Wool sleepwear significantly reduced sleep onset latency (time to fall asleep) compared to cotton at cooler temperatures (17°C), promoting better sleep efficiency. However, at warmer temperatures (22°C), cotton led to slightly better deep sleep. Bedding type had no significant impact. These findings suggest that thermal properties of sleepwear play a role in sleep quality by influencing body temperature regulation.
Use wool sleepwear in cooler environments to help fall asleep faster and maintain better sleep efficiency. Opt for cotton in warmer conditions to promote deeper sleep. Pairing appropriate sleepwear with temperature regulation strategies enhances benefits based on room conditions.