Philips HF3422 Mode D'emploi page 12

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Duration
Most people experience benefits if they use the appliance 20 to
30 minutes each day. It is safe to use the goLITE BLU longer, provided you
do so at the correct time of day. You may notice some energizing effects
of light immediately. Other effects become noticeable after several days of
regular use.
Indoor life and energy dips
If you spend a lot of time indoors with little daylight and artificial light, you
can experience the energizing effects of the Philips goLITE BLU very
quickly after you switch it on.
Many people experience a natural dip in the afternoon. The goLITE BLU
can help you counteract this dip.
Winter blues
If you experience lower energy levels, an increased need for sleep, and a
lower mood in the dark season compared to spring and summer, use the
goLITE BLU for 20-30 minutes a day. Preferably use it in the morning to
help you start the day. You may also use it later during the day, but do not
use it in the last few hours before bedtime. If you do, the light could delay
your sleep and make you even less energetic the next day.
Sleep patterns
- Morning persons tend to wake up early in the morning and usually
find it difficult to stay awake in the evening. If you want to get more
out of your evening, avoid bright light directly after waking up and use
the goLITE BLU in the evening.
- Evening persons find it difficult to get up in the morning and are full
of energy in the evening. If this applies to you, you need morning light.
Use the goLITE BLU within the first 1 to 2 hours after you get out of
bed. Avoid bright light or blue-rich light in the last 4 hours before
bedtime. Daily use of the goLITE BLU in the morning may help you
establish a regular sleep pattern that allows you to function better in
the morning.
Note: If your desired wake-up time is less than six hours after your normal
bedtime, do not use the goLITE BLU immediately after you wake up.
This could give your body a signal that is opposite to the one intended.