Boxing and programming

The problem of choice. I really like boxing. I work as a programmer. I tried to combine it - a hundred thousand problems appeared: to sleep at work, and absent-mindedness in
training (with dangerous consequences), and just the suggestions of the authorities to go
home - to "rest" because of their appearance. There are also fears for brain activity after “shock” loads. Could there be serious consequences with
an amateur approach to training?
I would like to know if someone could combine IT and percussion sports for quite some time (a year or more) and how did you manage to do this?