the.com/thinker
Someone whose heavy lifting leaves no muscles sore, only deadlines unmet.
means A person who reflects deeply, reasons carefully, or earns a living producing ideas rather than objects.
from From Old English thencan, to conceive in the mind; the noun simply tacks the doer onto the deed, naming whoever does it for a living.
Rodin's bronzeThe Thinker was originally Dante pondering hell.
Grammar twistFree thinker once meant religious rebel, not idle musing.
Brain costHard thinking burns barely more calories than rest.