Table 2  Inclusion and exclusion criteria.

2D:4D ratio: index/ring finger length ratio
Inclusion criteria	Pregnant women, who are between 8 + 0 to 14 + 0 weeks of pregnancy, who are at least 18 years old and a maximum of 50 years old, who have signed the informed consent, who agree to take part in the examinations (blood/urine testing, measurement of the 2D:4D ratio and heart rate variability, questionnaires, examination of the child, etc.), who agree to use the app, who have an unproblematic pregnancy at the time of inclusion.
Exclusion criteria	multiple pregnancy manifest comprehension problems during the introductory briefing prior severe psychiatric illness past history of adverse or missing effects of mindfulness exercises