A siesta is a short nap taken in the early afternoon, often after lunch. This practice is common in many cultures, particularly in Spain and other Mediterranean countries, where the midday heat can make work less productive. Siestas typically last from 20 minutes to an hour, allowing people to recharge for the rest of the day. The tradition of taking a siesta is linked to the natural circadian rhythm, which can cause a dip in energy levels after lunch. Many people find that a brief rest helps improve focus and productivity, making it a beneficial practice for both physical and mental well-being.