Your body's own hormonal system kicks back in just a few days after you get off the pill.

I spent a lot of years trying to beat the system and, in the end, the system kicked my behind good.

At the thought, my nervous system kicked into high gear.

First, the limits are set significantly higher, permitting the driver to be far more aggressive before the system kicks in.

The back-up system finally kicked in as her count reached eight.

The first year he fails to do so, his system will kick into gear.

The adaptive system kicks in after you are exposed to an infection for the first time.

In a moment the system kicked back on.

The system kicks in automatically and is not particularly noticeable to the driver.

At that point, the body's immune system kicks in.