Loud awakening

Spent today like a zombie trying to get through my working day on 3 hours sleep. How do Mums and insomniacs get by? I think my entire apartment block will be going to bed early tonight after being assembled on the street at 3am with all the fire alarms going off. Thankfully it was a false alarm but I didn’t get back off to sleep for the two hours I had left by the time the fire brigade had declared us safe to return. I also learned the answer to the question what would you grab in the event of a fire? As much as possible in my case!