All measurements were taken over a seven-hour period while the participants slept in a room that was 23°C in temperature.
Their heart rates and skin temperatures were also recorded, and the participants were asked on their views on how well they slept.
When wearing socks to bed, the participants fell asleep 7.5 minutes more quickly than when not wearing socks.
Moreover, total sleep time for those wearing bed socks lasted for 32 minutes longer.