The 3rd Training Day was conducted on 15 September 2015. For physical training, cadets were taught the Filipino martial art, Arnis, and it’s basic commands, strikes and defenses. For the Training Day, the cadets were taught mindfulness, a practice meant to relieve mental and physical stress. As part of the NSTP Common Module, the Legal Bases of NSTP and Philippine Society and Culture were taught, together with the Interior Guard Duty as their first ROTC lecture. The training day concluded with a game hosted by the UP Corps of Sponsors.