Something felt different during this run. The first 30 minutes started out as usual. Felt like I couldn't catch my breath during 15-30 minutes. Took my pulse at 30 minute point and it was around 108. After that point I then gradually started to feel better and breathing easier. Felt more in balance/homeostasis. Checked my pulse again and it was around 96. Lower pulse, but felt better overall and could speed up without much issue other than being out of condition.