[dgs_sgd]

From personal experience I believe the "runner's high" is very real. It didn't happen often, but sometimes 40-60 minutes in to a long run I would enter a state of flow and euphoria. It felt like I was effortlessly gliding across the ground and would last for as long as I kept running and a short time afterward.

[is_true]

This. I'm kind of able to trigger it by changing how I run after about 5k and focusing 100% on running. Eyes on the floor and just push.