While traveling, drink plenty of water. Stay away from alcohol, fizzy drinks and coffee. These drinks only exacerbate jetlag causing dehydration, tiredness and headaches. Drink plenty of water. Chamomile tea is very calming. Eat Lightly. The last thing your body needs it to digest a large meal. Exercise - “Economy Class Syndrome” is caused from inactivity or sitting in same position for an extended time. When time permits, get up and walk around aircraft.

Specific exercises and stretching techniques can be accessed through:

http://www.airnz.co.nz/resources/inflight_exercises.pdf

Try and get some sleep. Sleeping onboard will not only help to pass time, but can help you feel refreshed upon arrival. A travel neck pillow will assist in your sleeping, providing excellent head support. Avoid sleeping pills at all costs.

When you arrive, getting a quick nap will seem very attractive indeed – but resist this temptation. Go to bed at your normal bedtime (based on local time). This will force your body to adjust to any new time zones far quicker.

Article by Travel J - Traveler's Resources & Information - http://www.travelj.com

The geology of Yosemite is characterized by granitic rocks and remnants of older rock. About 10 million years ago, Sierra Nevada was uplifted and then tilted to form its relatively gentle western slopes and more dramatic eastern slopes. The uplift increased steepness of stream and river beds, resulting in formation of deep, narrow canyons. About 1 million years ago, snow and ice accumulated, forming glaciers at higher alpine meadows that moved down river valleys. Ice thickness in Yosemite Valley may have reached 4,000 feet during early glacial episode. The downslope movement of ice masses cut and sculpted U-shaped valley that attracts so many visitors to its scenic vistas today.

(This information was obtained from National Park Service and is in public domain.)