Any Tips to study for longer hours?

I usually would walk my dog first, make a very structured by the “time of the day” in 20 minute intervals and then I would take a five minute break. Look up tomodoro method if you havent before, helped me get theoufh engineering school

White noise on low volume to keep your overactive brain busy

keep distractions away and be well rested

I have to work on computer for veryy long hours non-stop. Three things help me on this: 1) Television (programs that cannot distract me but I somehow like the sound of), 2)Radio (that plays in not my mother language, and somethings that I like), 3)changing my location (when I feel too overwhelmed, I pick my everything up and go to another desk, to sofa...etc) :)