Eye to eye ear to ear the brain is something we should totally fear!

The first brain teaser of my blog!

                                 

A lift is on the ground floor.There are four people in the lift including me. When the lift reaches the first, floor, one person gets out and three people get in.The lift goes up to the second floor, 2 people get out 6 people get in.It then goes up to the next floor up, no-one gets out but 12 people get in. Halfway up to the next floor up the lift cable snaps, it crashes to the floor. Everyone else dies in the lift. How did I survive?

Please leave a comment below the answer will be revealed at 6:30.