Circuit training. Saboteurs often do well when they work intensely for short periods marked by a timer and then take a prescribed break. If you think about it, “takeoffs” and “landings” are memorable in lectures and lessons. But in the middle, our brains meander. So twenty minutes of science, twenty minutes of Spanish, and twenty minutes of social studies, with breaks in between, repeated twice, may have better impact than forty consecutive minutes of each. Adding more starts and stops encourages the brain to be more attentive and motivated.

