"Energy drain" refers to a situation where you feel lethargic, exhausted, and low in energy. It means that something or someone is consuming or taking away your physical or mental energy, leaving you feeling depleted and tired. Full definition
Because this kind of energy drain happens 24/7, its impact on a home's energy use can be significant even if the amount of energy consumed is rather small. (energysage.com)
The business end does seem daunting and a huge energy drain. (killzoneblog.com)
Short order cooking is not only energy draining on the cook, but does not reinforce the concept of offering balance and exposing children to new foods. (verywellfamily.com)