The current study is going to investigate the nature exposure intervention on the ability of self-regulation and decision-making skills among mentally fatigued soccer players. The subjects will be instructed to view some nature photos, which can facilitate the recovering process for directed attention and the ability of self-regulation. Thus, to see the improvement in decision-making skills.

The intervention of this study is nature exposure, specifically, instruct subjects to view and immerse in some nature photos due to the humanity of biophilia.

The condition of mental fatigue will be induced by the Stroop task.

Before the intervention or process of viewing photos, the baseline will be recorded to compare the post-test value of self-regulation and the score of decision-making skills.

Moreover, the different durations of viewing photos will be implemented to identify the optimal selection.

Inclusion Criteria:

• The selection of the participants will be every position without the goalkeeper. The age of them will be at 18-24 years. Only male players will be selected. Players should have at least played from the senior school and have 3 years' training experience.

Exclusion Criteria:

• The study will exclude color blindness, for the Stroop task will involve color. Self-reports should be free of any known disease or sleep disorder and not currently taking any medication.