I like short coffee naps. It makes it really easy to get up afterwards. I’d only recommend it if you are able to fall asleep almost instantly though.
Basically you chug a cup of coffee and then nap, setting an alarm for 20-30m. Once you get woken up the coffee will be mostly in your system and you’ll feel really refreshed.
If you are using a system with snap like Ubuntu, it will unmount those since they are technically mounts. It will fail if an app is using the snap but subsequent opens of closed snaps will fail.