Philips HF3550/60 User Manual page 14

Werken MV et al., Effects of artificial dawn on
sleep inertia, skin temperature, and the awakening
cortisol response. J Sleep Res 2010.
Furthermore, Philips and the National Sleep
Foundation are working together to help people
understand the effects of light on their overall
well-being. Learn more about good sleep habits
and how to work with your natural sleep and
wake-up patterns to feel more energetic
throughout the day with the sleep education
guide, "Managing Light for Better Sleep" from the
National Sleep Foundation.
The National Sleep Foundation is an educational
and scientific not-for-profit organization in the
United States dedicated to improving sleep health
and safety through education, public awareness,
and advocacy. The NSF supports the use of Wake-
Up Light but has not tested the efficacy of this
product.
iPod is a trademark of Apple Inc., registered in the
U.S. and other countries. iPhone is a trademark of
Apple Inc.
Apple is not responsible for the operation of this
device or its compliance with safety and regulatory
standards.