During sleep, your brain’s electrical activity goes through a five-phase cycle. A short afternoon catnap of 20 minutes yields mostly Stage 2 sleep, which enhances alertness and concentration, elevates mood, and sharpens motor skills. To boost alertness on waking, you can drink a cup of coffee before you nap.
However, camels can carry more weight and can move at average speeds of about 12 kilometer per hour for as much as 18 hours. A fast, unladen camel can attain speeds of over 60 kilometers per hour (while fast racehorses can peak at about 65 kilometers per hour). On sand, however, the camel will beat the horse in a race.