Researchers used the Pittsburgh Sleep Quality Index (PSQI) to reveal that resistance exercise improved people's PSQI score by 5.75 points. In comparison, aerobic exercise improved the score by 3.76 points, while combination exercise resulted in a 2.54 improvement on the sleep scale.

Among the participants, 41 showed insomnia symptoms. The sleep quality of these insomniacs significantly improved as they engaged in intense physical activities. They slept better

The authors expressed some surprise that strength training alone seemed a better sleep aide than the combination of aerobic exercise with strength training or the combination of s