Jennifer Garner jacket baby infant newborn spandex tights stripes palisades

Jennifer Garner is showing off what hard work at the gym can do to a body!

After her early morning workout, Ben Affleck's wifey then ran errands with adorable son Samuel.

While mommy was dressed in black spandex, tennis shoes and a green jacket, her little guy looked comfy in a sleeper.

This is a mama on a mission!