Working with circadian rhythms can boost our personal productivity. It’s clearly helpful to think twice about timing before sending email, scheduling a meeting, or asking someone to make a considered decision. The ‘morning morality effect’ means you should ask for a pay rise (for example) in the morning if you want a favourable response (assuming you deserve it).
It’s not only about when we do the work, but where. Productivity escalates when we have flexibility to work where and when we are at our best (and it saves the environment too).