Perhaps there is a cryptoid that can see it...Imaging of Ultraweak Spontaneous Photon Emission from Human Body Displaying Diurnal Rhythm User Prometheus6EQUJ5, in the Missing 411: For people who want to know more. Unexplained disappearances and other weirdness subreddit, 26 Oct 2021
[todayilearned] TIL that humans glow in the dark but the intensity of the light emitted is too low for the naked eye to see. User Know_Your_Shit_v2, in the Know Your Shit subreddit, 25 Oct 2021
TIL that humans glow in the dark but the intensity of the light emitted is too low for the naked eye to see. User 0---------------0, in the Today I Learned (TIL) subreddit, 25 Oct 2021
Imaging of Ultraweak Spontaneous Photon Emission from Human Body Displaying Diurnal Rhythm User Yvwh3, in the Masterofyourownmind subreddit, 14 Jun 2021
TIL the human body emits light as an energy called biophotons (unrelated to visible bioluminescence). User spiritusFortuna, in the Today I Learned (TIL) subreddit, 05 Sep 2020
[A] Imaging of Ultraweak Spontaneous Photon Emission from Human Body Displaying Diurnal Rhythm User actualzombie, in the BretCB's subreddit subreddit, 19 Apr 2019
TIL that the human body literally emits light (like fireflies do), but 1/1000 times the sensitivity of naked eyes.The light emission is rhythmatic and peaks at 4 pm. User I-am-always-happy, in the Today I Learned (TIL) subreddit, 15 May 2018
TIL the human body directly and rhythmically emits light. User HemlockOnRye, in the Today I Learned (TIL) subreddit, 28 Nov 2015
TIL That humans are (barely) bio-luminescent. User bilbo_swaggins, in the Today I Learned (TIL) subreddit, 11 Apr 2012