Łakomski, Mateusz, Julia Pietsch, Joanna Chłystek, Agata Abramczyk, Anna Golus, and Walery Zukow. 2017. “The Effect of Physical Activity on Mood - a Review of Current Literature”. Journal of Education, Health and Sport 7 (4):807-15. https://apcz.umk.pl/JEHS/article/view/4581.