Which is more efficient?

You reached a good point in your activities to get up for a moment.

You must complete two tasks; refill the water at your desk, and go to the bathroom.

Which is more efficient?

A) Refill cup and return to desk. Go to bathroom and return to desk. Finished

B) Refill cup and use bathroom in one trip to avoid going back to the desk.

The answer:

Option number A is more efficient!

Why?

Because I will always no matter how much I try to remember, forget my glass of water in the kitchen unless it’s the only thing I’m doing.