charging MacBook

Yes. Apple now has a feature called Optimized Charging where it will exercise the battery automatically when the laptop is on power in order to keep the battery healthy. See the following Apple articles for more details on battery management:

About Optimized Battery Charging - Apple Support

About battery health management in Mac laptops - Apple Support

I leave mine plugged in 95% of the time, as I have Optimized Charging enabled, as per HWTech's excellent reply to your question.