Physicists evidently running out of important problems to solve

The research, published in the journal Physical Review E, found that in average sized mugs the coffee’s natural frequency was the same as a person’s gait, which caused the liquid to oscillate.

The spillages were most likely between a coffee carrier’s seventh and tenth step, according to Live Science.

Following their discovery, the mechanical engineers had some advice for coffee drinkers.

They said leaving a large gap between the coffee and the top of the drinking vessel, and walking slower, prevents spillages.