How to Avoid the Common Cold
Wash your hands often and avoid touching your face
You use your hands for several things like to touch, hold, carry and hold your girlfriend, for instance. If you commonly use public transport, the chances of getting infected is higher. It is best to avoid putting your hands on your face to eliminate contact with filthy lingering wide spreading common cold germs.
It is advisable to carry a hand sanitizer and repeatedly wash your hands with soaps.