You can take surprisingly good naps sitting in a toilet cubicle - I did so for many months at Accenture and never had a problem. It energised me and enabled me to do better work the rest of the time.

I thought I was the only one weird enough person in the world to actually nap in a toilet. I can say a lot of good things about my company work culture, but unfortunately, naps in the middle of the work day are frowned upon there.

It's a shame that napping is so often frowned upon in hard-working–America culture. It seems to me a rather ignorant tradition. We look everywhere for ways to boost office productivity, yet napping remains an anathema.

Do you have a car? Go in your car!

Don't have a car? Go in a park!

Generally, you can take a nap fine in the day. Bring a book and sleep with the book on your chest. Nobody is going to disturb someone that fell asleep reading a book.