I am going to list some idea when feel bored to coding and take some rest and make your mind strong.
There are lot's of way to pastime that boring feel one of the dev.to podcast listening.
Also I know, when feel bored that time looking people some funny moment and looking take rest so just try to go youtube and search "Three stooges fun" or "Charlie Chaplini fun" some fun moment can make the mind more strong than again start the coding challenge...