is it just me? or are there remedies to this

I sleep 6 hours, eat a full breakfast, then do 4-6 hours spent fully suited up with PPE, a respirator mask whose straps dig into my skin, safety glasses that do the same and underneath which are some prescription glasses.

I drink water about every 2 hours

After which I discover about a quarter of my boogers being dark as charcoal from breathing in some flux and hope my mask was actually doing something useful

What do you fellas think this is? Heatstroke? Low potassium? My equipment fit too tight or too loosely?

Anyone else feeling that slight wooziness for the rest of the day after a job who can share insights? I don't think a doctor would get what this is