Martial Arts exercises the whole body and mind
… Exercise triggers an increase in body temperature, and the post-exercise drop in temperature may promote falling asleep. Exercise may also reduce insomnia by decreasing arousal, anxiety and depressive symptoms. Insomnia is commonly linked with elevated arousal, anxiety, and depression, and exercise has strong effects on reducing these symptoms in the general population. Finally, exercise may reduce insomnia by its effects on circadian rhythms (body clock). For people with insomnia due to the timing of their body clock, exercise may shift its timing depending upon the time exercise is performed…
https://sleepfoundation.org/ask-the-expert/how-does-exercise-help-those-chronic-insomnia