9. Take a quick hike

If you and your friends are the adventurous types, consider going on a hike. There are hikes that only take half a day, including the trip to the foot of the mountains, so there is no need to worry about being too tired the next day. Some of your options are Mt. Pamitinan in Rizal and Mt. Kalisunga in Laguna, but you are sure to find plenty other mountains to hike near your area.