Travel light - limit the things you carry with you when you travel.
When you travel to the Philippines, bring light clothing specially if you're visiting in summer. Cotton Tees, shirts, pants and walking shorts are your best bet.
Philippines uses 220V of electricity.
Avoid bringing valuables.
Make sure you make a photocopies of your passport and tickets just in case you loose them. Keep the copies in a separate locations - place them in the deep pockets of your luggage.
It is a good idea to use a belt bag to put your money, passport and other valuables when on the road rather than a bag. And position it in front of your body and under your shirt if possible.