It seems that some people overestimate how much time they have because they don't fully understand what's going to happen their body. This is where some pitfalls may lay. Even though you may be conscious for 15 - 20 minutes, don't expect to be moving or thinking right in that time period. Wherever you are, stay there. Definitely don't put anything on the stove or go for a drive, and stuff like that. If you smoke, I would smoke your last before the SN, lest you risk a very different death. Even following simple instructions may become confusing - so keep that in mind as best you can.