You may think your bedroom's good enough for a night's sleep, but could it be made even better? As part of National Sleep In Day, which took place when the clocks went back on Sunday (October 28th), the Sleep Council has created a visual, step-by-step guide to optimising your sleeping environment. The guide begins by recommending the best temperature for a night's sleep - between 16 and 18 degrees C, supported by the right tog duvet for the time of year on your bed, and sheets or blankets that can easily be removed if needed. Next, double-glazed windows can help to eliminate the noise of traffic outside to create a quieter space, which is essential for a good night's sleep. Of course, it's vital to have a comfortable bed - the Sleep Council recommends buying the biggest you can afford and making sure it offers the right level of support. Finally, the organisation says it's important to have total darkness for a restful night, so if you are disturbed by street lights shining into your room, consider investing in blackout blinds or using an eye mask.