I am having continuous sleepiness through out day. It starts around 11am. My eyes will be closed, as I sat in chair and start reading. After lunch, this becomes more and continues till 5pm.
If I do some physical activity like writing or moving around, I don't have the problem.
I don't have any sleep problems and sleeps for around 7-8 hours.
Is it due to any nutrition deficiency?
Earlier I was diagnosed with
vitamin d deficiency in January 2017 and I am taking d rise sachet once a week since then.