Melatonin Cycles Brought Into Sync With Light Exposure In Camping Experience

Carry On Camping--Can A Week Under Canvas Reset Our Body Clocks?  by Matt McGrath.  BBC News--Science &Environment.

(1)  Normally melatonin ________ before we go to sleep, _________  through the night until we wake up.

(2)  Modern lighting practices have tended to ______________.

(3)  By bring melatonin cycles and sleep into sync, the researchers found, that the amount of exposure to sunlight increased by ___________%