The theory of this comes from harvesting your plants before sun rise. Because trichomes plump up in the dark to get ready to protect themselves from uv rays. Also why plants need 4 hours of darkness when growing
Some people say it is. The real issue is that there is now way to quantify it. People say it makes more trichomes. If it does it would have no time to make them milk or amber. I harvest after my 12 hrs of dark. If i have autos i give them 12-18 hrs of a dark period.