Why does labour start at night?

Why is it important to darken the room for a labour? Are candles at a birth just "hippy" or do they help to make birth shorter and more effective?

10 Things to Do Before Going Into Labor

Signs of Early Labor – Happiest Baby

Dog Labour Signs & Puppy Delivery Stages Explained

Can Labor Start While Sleeping? - The Pregnancy Nurse®

17 early signs of labour to look out for

39 Weeks Pregnant: Symptoms Not to Ignore & Signs of Labour

Moon Phases And Labor: Does The Full Moon Induce Labor?

Things to Do in Alberta: Labour Day Weekend and Beyond - AMA

Surprising Things That Happen During Labor and Delivery