The 3D printed heart does a good job of diffusing the LEDs, with the device showing a rich and consistent glow without any unattractive hotspots. It’s a fun holiday build, and if you’re quick ...

Medically reviewed by Suzanne Fisher, RD Fact checked by Nick Blackmer Vitamin D3 (cholecalciferol) is most well-known for promoting bone health. But this vitamin is also pivotal for boosting the ...