I think it is effective in some ways. Planning out what you are going to work on the night before is a huge help. I think getting good at knowing what you can

I think it is effective in some ways. Planning out what you are going to work on the night before is a huge help. I think getting good at knowing what you can fit into a 25 minute slot takes some practice. Staying focused, not reading emails or posting on HN takes serious practice.