Had to read the article to find how the mice were lifting! "To access food, mice were fit with a small collar around the shoulders that required them to lift a

Had to read the article to find how the mice were lifting! "To access food, mice were fit with a small collar around the shoulders that required them to lift and set down the cage lid in a squat-like motion, which activates concentric and eccentric muscle contraction" There is a diagram as well :)