Physical Activity, Fertility, and Spontaneous Abortion in Danish Couples Trying to Conceive

"All participants will receive a wrist-worn activity tracker (Garmin VívoSmart 5) which will be connected with an application, Fitrockr. Data from the devices will be linked to data from the Snartforældre-questionnaires. The participants are asked to wear the tracker 24/7 during preconception and during the first trimester of their pregnancy if they conceive within 12 months.~Participants will receive information material and be asked to set goals for their PA level. To follow-up on the goal setting, they will receive two phone calls, where the conversations will be inspired by motivational interviewing."