What is the difference between
autotrophs and heterotrophs​

autotrophs (producers) are able to make their own food from raw materials whereas heterotrophs (consumers) consume other producers or other consumers

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.