The body clock is most responsive to sunlight in the early morning, between 6:00 a.m. and 8:30 a.m. Exposure to sunlight later is still beneficial but doesn’t provide the same benefit. Of course, this is going to vary depending on the time of the year, but make it a habit to get some sun exposure during that prime-time light period. Getting direct sunlight outdoors for at least half an hour has been shown to produce the most benefit.
