Ms Bts

This thread is helpful. I have been struggling recently with insomnia and trying to figure out why. I had been sleeping well even after exercising however now after my cardio workout on the rowing machine or recumbent bike I have insomnia. I have been exploring biking or rowing faster for a few minutes, bringing my heart rate up, and then slowing down for 4-5 minutes, then repeating this over again. My heart rate does slow down during the slower pace and I am happy that happens. Still I suspicion my sympathetic nervous system is getting wired up somehow causing sleeplessness after exercise.