A modest evening walk, because calories are calories, and walking is better than watching TV! Also builds the legs up, if you are not used to running yet. Even though the heart rate is under my Zone 1 throughout.
So, you've done the main exercise activity for the day.
30 minutes, say, of intense sweating. You really couldn't do that again today.
Time for a nice sit down in front of the TV for the evening, then?