Interesting tidbit here, and all for pennies on the dollar...
https://www.ergo-log.com/vinegar.html
Drop of vinegar before sleeping may improve body composition
There's no hard proof yet of the assertion in the headline, but it may not be long in coming. Studies sugges that you can lose more fat while asleep and give your muscles a slightly stronger growth stimulus if you take a couple of capsules of apple vinegar before going to bed. Ordinary cooking vinegar will also do.