What prevents excess calories from turning into fat instead of muscle?

Is working out all it takes to make sure the majority of calories are converted to building muscle instead of fat?

I know excess calories are needed to build muscle, but what happens with excess calories after it’s done that? Does it metabolise into fat?

from Bodybuilding News Updates https://forum.bodybuilding.com/showthread.php?t=175312781&goto=newpost
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