This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
Why caffeine doesn’t leave everybody wired
Not everyone responds to coffee in the same way. Depending on your genetic make-up, you might be able to drink coffee
right before bed or feel wired after just one cup, ongoing research