Sleep Length and Euploid Embryo Transfer Prospective Study

Sleep is a critical component of daily life that significantly influences health and well-being. Despite the integral role sleep plays in life, its effect on women's reproductive health, and its subsequent impact on fertility, is largely understudied. The purpose of the SLEEP Study is to investigate the link between sleep and fertility. Participants will use a wireless wearable device mounted on the finger to measure sleep in the weeks preceding and following an embryo transfer during treatment with in vitro fertilization. The investigators hope that these findings will inform future therapies that improve sleep and fertility outcomes.

Inclusion Criteria: * Undergoing a single euploid frozen embryo transfer * Patient's 1st, 2nd, or 3rd embryo transfer (prior fresh or frozen transfers included) Exclusion Criteria: * Primary infertility diagnosis of polycystic ovary syndrome * BMI \> 40 * Diagnosis of primary ovarian insufficiency (FSH \> 40) * Night work * High risk of poor outcomes of fertility treatment \[\> 2 prior miscarriages (women with recurrent pregnancy loss), significant uterine factor infertility \[\>/= 2 myomectomies (open abdominal or laparoscopic) or any non-hystoeroscopic myomectomy entering the endometrial cavity\] * Undergoing medical fertility preservation for a significant medical co-morbidity * Current cancer diagnosis * \> 3 prior failed embryo transfers in attempt for current live birth