(CNN) Physical training and tens of thousands of dollars are just a few of the things adventure-seekers need to conquer Mount Everest. Experts say it takes much more than that to check it off your bucket list.

Hundreds of people from around the world travel to the Himalayas every year, dreaming of reaching the Everest summit. They spend weeks getting their gear, adjusting to the altitude and simply waiting for good weather.

Here's what you need to know if you are thinking of climbing Everest.

When is the best time to climb Everest?

Most mountaineers attempt to ascend the world's tallest peak in May. There's a brief window of time -- usually after May 15 -- when temperatures are warmer and the high-altitude winds known as the jet stream have moved away from the mountains.

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