How to preparations?

Medicines:

try to bring the following medicines which will be very useful during your travel. Cold and flu tablets, throat lozenges and nasal decongestant.

Aspirin—for pain or fever
Multivitamins—when dietary vitamin intake may be inadequate.

Clothing
The temperature during daytime is around 10-25 C in Lhasa, while at night it may reach 0C. When visit the lake or mountain, down-jacket is needed.

Try to dress in black or other heavy color clothes since the road out of Lhasa may be very dusty and dirty.

Jacket: a fiber-pile jacket is ideal for evening.
• Sweater: Wool or wool mix with a high neck for extra warmth.
• Headwear: wool or fible-pile ski-stly cap or balaclava for warmth. A lightweight brimmed hat is good for sun protection .Inexpensive broad brimmed straw and elt hats are sold in Tibet's city markets.
• Cotton underwear: four or five pairs.
• Socks: at least three pairs.
• Shirts: A long-sleeve shirt made of wool, flannel, or chamois, or a track-suit top. A long-sleeve stay-pree cotton shirt for warmer temperature. Bring two or three T-shirts as well.
• Pants: For men, one pair of loose-fitting wool pants, wool knickers, or fiber-pile pants, and one pair of light-weight cotton pants. Women should wear a midcalf dress or skirt, though pants and knee-length knickers with socks are also acceptable. Shorts are not appropriate at any time in Tibet for men or women.
• Snack foods: Nuts, chocolate bars, granola bars, dried fruit, hard candies, beef jerky, and flavored drink mixes are much-appreciated trail treats.