Efficiency: I do my thinking/coding/building/writing (not writing emails) in the morning before anyone comes in and can interrupt me. I plan all meetings (which I don't consider proper work) in the afternoons. In short: work first, chatting and socialising afterwards. Some people do like to do it the other way around, which I totally understand and respect. I'm more of a morning person. TDLR; My first 8 hours I start with creating value and at the end of the day I a put in a few extra hours (not always) to socialise ;-)