Normally, the body is able to keep the sinuses clean and healthy, despite the dark, moist environment that bacteria love. However, when conditions are right, bacteria can grow out of control in the sinuses, causing a sinus infection. One cause of sinus infections is the common cold.
It has been established that there are two major patterns of human behavior that reflect two modes of brain operation: 1  Survival-Oriented Behavior (SOB). Controlled by primitive areas in the middle of the brain.  Balanced-Empathic Behavior (BEB) .
Survival Mode is a mode where you play through the game, but you only have ONE life.If you die the game is over. There is a leaderboard showing the top times for how long players survived. This is a difficult mode that is not meant for the faint of heart.TIPS FOR SURVIVAL!Note: these tips can also be applied to campaign.here is a leaderboard showing the top times for how long players survived. This is a difficult mode that is not meant for the faint of heart. TIPS FOR SURVIVAL! Note: these tips can also be applied to campaign.