On days when all you really want to do is stay in bed and watch Netflix you really need to get your body moving and your blood circulating. There are many reasons why you should, both mental and physical, but we won't go into them here. The Off Day workout is what you need. It's easy to do. It targets the whole body. It will not exhaust you. It will stop you from losing precious ground in your fitness and motivation. It also has EC.
Extra Credit: 20 seconds rest between sets.