On: 670nm red light exposure improved aged mitochondrial function, colour vision

[bethekind]

I think one of the issues is how over priced most of the panels are. You're paying an arm and a leg for lots of little red lights. Nothing more.

[jbd0 → bethekind]

I thought they were overpriced until I looked into building one myself. The heat sinks were going to be really expensive. The LEDs and lenses weren't cheap either.