Opening up your MacBook and how to avoid static electricity
If you run around naked there is no static build up. 

But that is not always a option.

So it is the clothes that charge up.

Some clothing materials are worse than others.

Siting on a chair with wheels is not good, but then you can have a static discharge mat under it.

Dry air amplifies the problem of static charge

The key is your shoes, or no shoes. That is one place where you can get discharged, leather soles on a concrete (tiles) ground, and no rubber soles on wooden floor

In a professional environment the people where a arm bracelet that is connected to a ground. That is not always applicable for home and walking around.

You can get one of this products http://www.amazon.com/b?node=1069150