Speech by Author Sara Mednick on the topic of napping.
You may be surprised to hear me say this, but if I could wish anything for every homeschool parents, it'd be the gift of a nap. If you doubt that you need a nap, then you need to read Sara Mednick's Take a Nap! Change Your Life: The Scientific Plan to Make You Smarter, Healthier, More Productive (Workman Publishing, 2006).
This book changed my perception of napping for the better. I don't do it every day, but I do try to "honor" the sleep pressure that hits during "siesta" time in some way. I've been known to nap in the car while our kid takes a class--provided the weather is cool enough and I'm caught up on my paid work.
When I respect and honor the wakefulness rhythms in our lives, I find that everyone is happier and more focused. It doesn't work for every family, granted, in our hyper-scheduled lives, but it's worth attempting some dedicated "recharge time"--be it a nap, mindfulness meditation, prayer, or some other sort of relaxing activity to nourish body and soul--every day.