I know it’s said over and over and over, but regular exercise!! There are certain types and times of exercise that are more effective, but generally speaking, exercise promotes serotonin conversion to melatonin and makes sleepy time easier.
Absolutely! Additionally, morning sun is another great way to regulate your circadian clock and let your body start its internal timer for melatonin release.
In the winter, I use a light box for seasonal affective disorder, and in addition to feeling much more energized, I find it helps me get more consistent sleep!