Exercise and Pupil Dilation?

[Sykoknot]

As I got done with a vigorous weight training/cardio workout I looked in the mirror and noticed my pupils were about 85% of my iris. Rolling-esque dilation.

Was curious if anyone else experienced this and what may be the cause? Dopamine and/or seratonin release?

 

[PredatorVision]

in the past I found that there was a period of about four or five hours after doing long runs (16 - 20 miles) that felt exactly like an MDMA high for me; dilated pupils, happyness, heart still going faster than normal.

 

[nowitson]

Me too

Same thing happens to me after doing a very intense weight lifting session. Full body workout stuff with squats, cleans, etc. I could even look in the mirror and as I press the weight my pupils get real big. I believe it has to do with the Adrenaline complex within the body. Funny stuff :D

 

[Perpetual Indulgence]

endorphins

 

[AfterGlow]

wouldn't endorphins work similar to opiates and make your pupils contract?

 

[nowitson]

I'm 99% sure its adrenaline. Fight or flight response among other things = pupil dilation

 

[Changed]

endorphins or adrenaline... runners high/workout high either way.