Myth debunked: Blowing in your cartrige games never helped.

Essentially, the reason why blowing cartridges worked is because it was dislodged and placed back in. If you did this enough times without blowing on it, it would have worked just as quickly. Indeed, blowing was actually bad for your system. Because some components were made of copper, the moisture you exhale when blowing would eventually, over time, damage the cartridges.