JosÈ Guilherme Cecatti of Cemicamp in Brazil will develop a small watch-like device to measure the sleep patterns and physical activity of pregnant women to help identify very early signs of serious medical conditions such as gestational diabetes and preterm birth so they can be better treated or prevented. Some chronic diseases such as diabetes and cancer are known to be associated with disturbances in sleep and physical activity. They will study whether this is the case also for complications during pregnancy.