Hi. I like days where I am working on a test all the time. It doesn’t matter if it is on a computer or doing an experiment. At the end of the day there is a real sense of satisfaction after working hard. Tests also mean data. Making sense of data is one of the most fun and interesting parts of my job.
If I have to run tests every day for a week, I get a bit bored and want some variety though. I would prefer to run a test for a day and then look at the results for a day and then maybe do another day of testing.