> I, like many people, need to exchange my time for a paycheck. During this time I often have to pay close attention to minute details in a text document, and t

> I, like many people, need to exchange my time for a paycheck. During this time I often have to pay close attention to minute details in a text document, and think through implications of design proposals. Anecdotally, I can concentrate and focus a LOT better when I get a plenty of sleep and exercise and don’t drink any coffee at all for at least a few days beforehand. I do love the flavour of coffee though so I still drink it, but I try to keep my intake low. > The result was: I was sleepy at inopportune times. I’m certainly no expert and definitely don’t know your specific circumstances, but on the surface this looks like a sleep hygiene or even diet issue. > One in the morning, another in the afternoon. I don’t know what age you are but I used to do this in my twenties and never had any problems sleeping, but in my thirties a coffee in the afternoon really messed with my sleep, although it took a few visits to the doctor to realise. I now very rarely drink coffee after about 1300 and I sleep a lot better. Basically, if you’re young, you can get away with it but be careful. If you’re not young then... maybe your body handles it differently, lucky.