I've begun a new workout for me. I've been walking outside in the morning without wearing sunglasses. The two ideas being to exercise, and also being exposed to sunlight helping to wake me up and brighten my mood.
It's similar to what I've about SAD lights. So far I've lost around 10lbs too which is a nice bonus. A little on the idea of using light therapy and exercise can be read here:
Why you don’t need to be ‘SAD’ to benefit from light exposure
Why you don’t need to be ‘SAD’ to benefit from light exposure
excerpt:
"...While light therapy does appear to have potential in combating depression of a seasonal nature, there is some evidence that it might help combat non-seasonal depression too. In a study published recently in the
Archives of General Psychiatry, blue light therapy was tested in a group of individuals aged 60 or over with ‘major depressive disorder’ [1]. The depression was non-seasonal in nature (in other words, it did not appear to be precipitated by lack of light in the winter).
Treatment consisted of bright blue light therapy (about 7500 lux where lux is a measure of light intensity) for an hour each morning. This was compared to a ‘control’ treatment of dim red light (about 50 lux) for the same time. Treatment was for a total of 3 weeks, and individuals were assessed for a following 3 weeks following treatment too.
Depression scores reduced significantly in the group receiving blue light compared to those getting the control treatment.
Sleep improved, and also individuals ended up getting out of bed sooner after waking in the morning.
Some biochemical parameters were also checked. Levels of the stress hormone cortisol came down considerably in the evening in response to bright blue light. And levels of melatonin (the chief neurochemical responsible for sleep) increased more rapidly after exposure to blue light too.
All in all, these results suggest that bright blue light therapy might have benefits for mood and sleep even in those who do not appear to be suffering from SAD
per se. Another study, this one confined to women, also found that in blue light therapy improved mood and energy in individuals suffering from non-seasonal depression [2].
This evidence does support the notion that light has benefits for mood and general wellbeing, and may cause some of us to increase our efforts to get adequate light exposure throughout the year either in the form of sunlight and/or appropriate light device."