A coffee and catnap keep you sharp on nightshift The National Tribune The National Tribune The National Tribune Education 28 Aug 2020 4:35 pm AEST Date Time Share A simple coffee and a quick catnap could be the cure for staying alert on the nightshift as new research from the University of South Australia shows that this unlikely combination can improve attention and reduce sleep inertia. Source & references /UniSA Release. View in full here.