It is a warm summer night, 32oc, with the relative humidity at 100%. during the night, the air temperature drops to 18oc. you would expect to see on the ground in the morning

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.