Braxton Hicks contractions are practice contractions that help your uterus prepare for labor. They usually feel like a tightening or hardening of the belly and can start in the second trimester, becoming more noticeable in the third. They are typically painless or mildly uncomfortable and last for a short time. Unlike true labor contractions, Braxton Hicks are irregular and do not get stronger or closer together. They often go away when you change position, rest, or drink water. Dehydration, phy