I have been setting myself a task each day to see how my body is affected by the close physical proximity of another. My task involves engineering gentle encounters with strangers in my day to day life. I do this in public places, in a shop, bus or tube or even just in the street, standing close enough to someone to be heard if I were to speak. I try to interact with them without speech or touch, and although occasionally there might be an accidental collision or bump this must pass almost unobserved and not warrant an apology. The motivation of the encounter is not important, rather how the atmosphere or energies of one individual can be absorbed or enter into another not psychologically or socially, but literally get into an individual and, if only for an instant, how something is present that was not there before, changing our behaviour and our biology.