During a psilocybin experience, a wearable device measured a heart rate in the mid-50s, with no perceived heartbeat or pulse pressure.

“At one point, I felt like my entire body was still. I had a perceived sense of total body control. Like my heart had stopped. Complete stillness. This was surprising as I’m acutely tuned to my heart beat. I monitor my heart all day every day and can usually discern my heart rate by sensation. In that moment, I couldn’t feel my heart beat or any pulse pressure through my blood vessels. First time that’s ever happened. I asked Kate to check my heart rate on my wearable and it was mid 50s.”