I focus better in the hours after exercise, and better generally while maintaining a regular exercise routine. Any kind of exercise helps some but I find cardio

I focus better in the hours after exercise, and better generally while maintaining a regular exercise routine. Any kind of exercise helps some but I find cardio is most impactful in this particular area. It doesn't have to be intense but I do need to work up a good sweat. Long low-intensity works too but it's not too often I can take a very long walk/hike.