Do ants or any insects have muscle or fat?

like for example people say insects would lift a car if they were the size of humans, but also do ants even have muscles? are they 'strong' in the same sense as people?

and do insects have anything in their bodies that produce muscles or fat?
Update: well you make it sound like common knowledge, but really how often do you see a buff ant? if one ant crawls around more than another is it stronger?
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