You should be in good enough shape to walk continuously throughout the day. Good overall fitness, flexibility, and healthy will ensure you trek safely and comfortably. Those with acute or chronic health conditions impacting their stamina, range of motion, coordination, or balance may have difficulty completing the trek. If you are in doubt about your own physical readiness, consult a physician well in advance of booking your trip! General hiking experience and comfort with the idea of multi-day hiking will also ensure you are 100% ready to trek!