The word "Idle" in the Merriam-Webster is defined as:
To run at low power and often disconnected usually so that power is not used for useful work.

Human Health Impacts

Wasted Fuel

Internal Wear and Tear

Idle worship is worship that is running at low power and often disconnected usually so that power is not used for useful work.

Idle worship led to human impacts.

Idle worship led to wasted fuel.

Idle worship led to wear and tear.

Be moving when the engine is running (be all in).

John Piper wrote:
"Truth without emotion produces dead orthodoxy and a church full . . . of artificial admirers. . . . On the other hand, emotion without truth produces empty frenzy and cultivates shallow people who refuse the disciple of rigorous thought. But true worship comes from people who are deeply emotional and who love deep and sound doctrine. Strong affections for God rooted in truth are the bone and marrow of biblical worship."

Follow manufacturer recommendations (lean on the Lord).

Don’t start before you're ready to depart and shorten commute times (be led by the Holy Spirit).