The words we got: Force, Tension

Upon getting the two words, we thought they had a really simple relationship with each other, so we initially were going to just push against each other with our palms as hard as we could for the whole duration of the minute, and release the tension at the end. 

Charles then encouraged us to consider having a definitive start and end to our performance, informed by the performance itself rather than just when the timer went off.

So we ended up with a set of actions, put into a choreography. And the moments of force would be when our backs hit each other, and tension when we pushed or pulled against each other. Our moments of tension were followed by release of that tension, which to the viewer I think visually amplified the tension.