Running a generator to exercise it when there's shore power?

I try to remember to run my home portable genny every month or so. It is a noisy cheap open frame type kept for hurricane loss of power backup.

If you are going to make noise, go big but make it as short duration as possible. Sometimes I will combine genny running with grass cutting. Sounds like I have two mowers on the go.

Wheel it outside. Start it up & plug in a couple of 1000w heaters to give it something to do.