The online Beagle library now allows anyone to see the amazing range of visual imagery that Darwin poured over during the voyage. See the illustrations here Humboldt's illustration of his famous ascent of Mount Chimborazo in the Andes in 1802.
And it may be our busy lifestyle that keeps us from napping. While naps do not necessarily make up for inadequate or poor quality nighttime sleep, a short nap of 20-30 minutes can help to improve mood, alertness and performance.
1 Keep to a schedule. 2  Napping at the same time every day will allow your body to regulate itself to fall asleep more quickly at that time. 3  Keep it short. 4  Only nap for 10-20 minutes. 5  A 20-minute power nap provides enough sleep to help you feel refreshed and more alert, yet it won't interfere with falling asleep at night.hese 11 tips will help you wake up rested and refreshed: 1  Nap every single day. 2  Contrary to all the sleep sources that say to avoid napping, I believe daily naps are definitely a good idea. 3  Keep to a schedule. 4  Keep it short. 5  Make it in the early afternoon.