energy-saving

The secret to their success is their slothful nature.They are energy-saving icons.And I founded the Sloth Appreciation Society

"The majority of your neighborsare undertaking energy-saving actions every day.”A similar message focusing on what our neighbors are doing

Other researchers think their flightmay be an energy-saving migration strategy,because it takes less energy to move quickly through the air

Some have gone extinct while others are endangered.So in spite of the energy-saving advantagesof flightlessness, many flightless bird species have

or stayed awake and hasn't moved very much,the energy saving of sleeping is about 110 calories a night.Now, that's the equivalent of a hot dog bun.