How to disable a motion detector.?

i workout at 4 and go to work at 5 for the whole day. right outside my building is a pool. there is a motion detector pointing at the pool. i would like to do some swimming as a workout but at the same time its annoying when those detectors detect my movement and turn on those lights. i ume it bothers the people on the first floor. is there anyway physically that i may be bale to disable a motion detector without breaking it in any way.