Light's Effect. Light is one of the most important external factors that can affect sleep. It does so both directly, by making it difficult for people to fall asleep, and indirectly, by influencing the timing of our internal clock and thereby affecting our preferred time to sleep.
The forewaters are released when the amnion ruptures. This is commonly known as the time when a woman's water breaks. When this occurs during labour at term, it is known as spontaneous rupture of membranes. If the rupture precedes labour at term, however, it is referred to as premature rupture of membranes.
Both membranes rupture when your water breaks. What makes your water break when you are pregnant depends on whether or not this happens at term or preterm, or before or after labor begins. At some point at term (37 weeks) your water has to break for your baby to come out.