You can't sleep when there are enemies nearby. Didn't you play Skyrim, Minecraft, Fallout... Or more seriously you have messed up bloodwork. Get your blood che

You can't sleep when there are enemies nearby. Didn't you play Skyrim, Minecraft, Fallout... Or more seriously you have messed up bloodwork. Get your blood checked. Vitamin D is necessary during day. Seeing the morning light and end of day sun set can actually help. Or you didn't exercise enough. Various military organisations have sorted out sleep: they can get you tired enough to sleep vertical. Often while still marching.