Hi! I'm wondering if it's caffeine or blood sugar related or even adrenal gland or glandular related. I would definitely get in touch with your pcp and have them check your blood. Sorry I can't be of more help. Take care--Hopeto--
It could be a drop in blood sugar? what do you usually eat before or during those times? It isnt unusual for a drop in blood sugar between those times. Try eating a healthy snack that stabilizes your bs such as protein, whole grains, apples, etc...
I am tired also at 4 PM. I just feel like I need a nap. I work at a grade school and I want to come home and nap. I am so tired. Then I can get a second wind in the evening. I don't know what it is. Just now you are not alone in feeling this.
