If you’re struggling to sleep or constantly waking up during the night, the temperature of the room could be the issue. A bedroom that’s too hot or too cold can have disastrous effects on your rest, but what is the optimal sleeping temperature? What is the optimal sleep temperature?We asked NHS GP and sleep expert Dr. Hana Patel, who told The Focus: “One of the main factors that can affect sleep is room temperature – whether you’re too hot or too cold.” “Even being slightly outside of the key temperature range of 15-23°C can make us more likely to wake up during the night,” she continued. Slee…