When I create a conda environment it inherits all the packages I have on my system. My OS is Windows 10.
If I run the where python on my conda environment I get the following:
C:\Users\Jordi\anaconda3\envs\mmpose-env\python.exe
C:\Program Files\Python38\python.exe
C:\Users\Jordi\AppData\Local\Microsoft\WindowsApps\python.exe