**2. Materials and Methods**

In the current study, 300 university students residing in Spain, aged between 17 and 51 years (according to the sample obtained), were interviewed via online questionnaire in a period of 3 months, from October 2020 to December 2020. Our inclusion criteria were: Enrollment in the current academic year, currently living in Spain, and either graduate or undergraduate students from any field/area of expertise. In order to prevent double responses from the same person, students had to include their Student ID, which was required to match with the university database. Furthermore, data were considered strictly confidential. This research complied with the Helsinki declarations (revised in Brazil, 2013), on human research and was approved by the University Ethics Committee (CIPI/18/074).

All of the participants digitally signed a consented participation where the aims and procedure of the study was explained. To reach the aim of the present research, a crosssectional study was developed. The following parameters were analyzed.

### *2.1. Sociodemographic Factors*

Age (years), height (cm), weight (kg), and Body Mass Index (BMI, Kg/m2) were analyzed, along with the degree of compliance with the confinement due to the COVID-19 crisis using a Likert scale, where 0 means the least and 10 the most. The question, "How many people you have lived with during the confinement?" was measured on a selfperception scale, indicating the number of people with which the student lived.
