Kiểm tra thời tiết trước khi đi. Chọn nơi cao ráo để tránh ngập lụt và ướt át. Chọn nơi không có đá sỏi lổn nhổn trên mặt đất. Xịt thuốc chống côn trùng để xua đuổi các loài gây hại. Mặc trang phục phù hợp với thời tiết. Đem theo túi ngủ và đệm ngủ để tạo môi trường ấm áp và dễ chịu.

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Before you begin your tent-free adventure, look at the weather forecast for the time and location of your camping trip. If it will be cold, wet, or windy, you’ll need to prepare appropriately. If there’s a chance of bad weather, consider bringing a tent as a backup plan. Even if the forecast is good, it’s a good idea to bring a tarp in case of unexpected rain. Even if you’re not expecting rain, it’s a good idea to avoid sleeping in low-lying areas. Sleeping at the bottom of a slope can leave you exposed to unexpected flooding, dampness, and even rock or mudslides. Try to find relatively high, flat ground. If you do sleep on a slope, orient yourself so that your head faces uphill. Even with a sleeping pad and soft sleeping bag, sleeping on rocky or bumpy ground is very uncomfortable. Look for a spot where the ground is flat and free of sharp rocks and sticks. If you can, clear away any sharp objects on the ground before you set up camp. One of the biggest drawbacks to tent-free camping is that you’ll have to deal with bugs. Before you bed down for the night, spray yourself and your equipment down with a powerful DEET-based bug spray, preferably with a concentration of at least 30%.  You can also protect yourself from bugs (while still getting an open-air experience) with some mosquito netting or a small mosquito tent. For extra protection from mosquitos and ticks, consider pre-treating your gear and clothing with permethrin spray. Follow the application instructions on the label carefully, and let all items dry completely before using them. Even if it’s relatively warm out, temperatures can drop at night. Pack comfortable clothes that protect your skin from the elements, and bring some extra layers you can wear while you sleep. If you expect cold temperatures, you can protect yourself by:  Wearing wool or synthetic fabrics, such as polyester or polypropylene. These materials will keep you warm and wick away moisture more effectively than cotton. Protecting your extremities with warm socks, gloves, and a cap....