The aim of the research is to compare the effect of a free aerobic exercise program and an aerobic exercise program using devices on some psychological and biological aspects of the students of the Faculty of Physical Education. The researcher used the experimental method to compare three experimental groups and a control group. The research community consisted of third year students at the Faculty of Physical Education for Girls. The study tools were the proposed program of free aerobic exercises and the proposed program using devices. The most important results indicated that there are statistically significant differences between the pre- and post-measurement of the two experimental groups and the existence of statistically significant differences between The three groups are in favor of the experimental group that used free aerobic exercise