Zhang H, Li P, Fan D, et al. - Researchers conducted a cross-sectional study among pregnant women in Foshan Women’s and Children’s Hospital with the aim to determine the prevalence of poor sleep quality and risk factors for poor sleep during different trimesters of pregnancy and inturn provide better management of sleep during pregnancy. Among 2,281 pregnant women analyzed in this study, over half described poor sleep quality (51.8%). Per findings, there were differences in the prevalence and risk factors for poor sleep in different trimesters. The lowest rate of poor sleep was recorded in the second trimester. A higher risk of poor sleep was recorded for women who were unmarried, had > 12 years of education, exercised < 3 days/week, were in the third trimester, had a high level of nausea and vomiting during pregnancy (NVP) and had a history of infertility. Poor sleep is mostly linked with pregnancy-related factors. In the first trimester, a history of infertility and a high level of NVP were the main risk factors for poor sleep. In the second trimester, the only risk factor for poor sleep was a high level of NVP. In the last trimester, more education years, exercise < 3 days/week and high levels of NVP were the risk factors for poor sleep.