under martial law in the usofa what happens?

What is the concept of martial law?
The martial law concept in the United States is closely tied with the right of habeas corpus, which is in essence the right to a hearing on lawful imprisonment, or more broadly, the supervision of law enforcement by the judiciary. The ability to suspend habeas corpus is related to the imposition of martial law.
.
... so just how would this effect normal daily life? ...
.