Philips EnergyUp HF3422, Manual

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Travelling east
When you travel east , you have to advance your sleep time by a number
of hours that equals the time zones you cross. You can shift your body
clock forwards in steps of one hour a day. The number of time zones you
cross determines how many days before departure you have to start
using the Philips EnergyUp. Use the appliance for 30 minutes after you
wake up. Avoid bright light in the evening and go to bed early. When you
arrive at your destination, avoid bright light during your normal sleep
period. Expose yourself to bright light at the end of this period to
advance your body clock further to the local time.
Before your return flight, use the Philips EnergyUp late in the evening for
a couple of days. On the last night of the trip, try to stay up and use the
appliance as late as possible after midnight. On the day of the flight, avoid
any bright light in the morning.
Travelling west
Since most people’s body clocks adjust more easily to later time zones,
you only have to use the Philips EnergyUp for one day before you travel
across four time zones. Add an additional preparation day for each
additional three time zones. You do not have to use the Philips EnergyUp
for more than three days, even on longer westbound trips. Use the
appliance for 30–40 minutes late in the evening. Start two or three days
before you leave. Use the appliance two hours later the following nights.
When you arrive at your destination, try to stay awake until bedtime and
avoid bright evening light (wear sunglasses) for the first few days. Before
you travel home, avoid any bright afternoon and evening light. Use the
Philips EnergyUp in the morning for a few days.
Light intensity
Use the Philips EnergyUp in addition to the normal room lighting. The
Philips EnergyUp is more comfortable to use in a well-lit room. Adjust the
brightness to a comfortable level. Allow a few minutes for your eyes to
get used to the bright light. If the highest setting is too bright for you,
start using the appliance at a lower setting. Increase the light intensity if
you feel no effect after a week.
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