A human will continue to convert energy regardless of what they are doing, and there's an argument for using one's body (including the brain) enough rather than

A human will continue to convert energy regardless of what they are doing, and there's an argument for using one's body (including the brain) enough rather than too little. How much energy any particular tech uses is an additive concern more than a substitution, and I am careful about adding more energy consumption on top of what I already use to live.