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everambr's Recovery range is designed to improve sleep quality and hence aid physical performance. Artificial light in the evening tricks our brain into thinking it's still daylight. By wearing strong lenses that block this light, you can allow your body to get tired naturally and still be able to use a laptop, phone or television.
In short, the red lenses (Sleep+) range are stronger and block more sleep-affecting light than the yellow lenses (Sleep).
However, the caveat to this is that the Sleep+ lenses, being extremely strong (in fact, the strongest we've ever come across in almost 10 years in this industry!), have limited visibility. When you're wearing them, you can see your screen....but not much else around you. They are perfect for situations where peripheral vision is unimportant.
On the other hand, the Sleep lenses (yellow) have very good visibility. There is a strong yellow hue of course, but you would be able to function normally and could even wear them during the day.
Yes. Very much so. Some online chatter is quite critical of blue light glasses and their effect. However, this is usually related to other claims, other than helping with sleep, that have not necessarily been proven. Certain strengths of light-blocking glasses have different capabilities, they should not be lumped into the same functionality - that's unrealistic and causes confusion and scepticism.
Blue and green light wavelengths, especially those emitted by electronic devices like smartphones and computers, can suppress melatonin production, which is essential for regulating sleep-wake cycles. Blocking these wavelengths can help maintain optimal melatonin levels, promoting better sleep. (Cajochen et al., 2011)
Studies have shown that filtering blue and green light wavelengths, particularly in the evening hours, can lead to improved sleep quality by reducing the disruption of circadian rhythms. This can result in longer and more restorative sleep periods. (Chang et al., 2015)
Blocking blue and green light wavelengths before bedtime has been found to alleviate symptoms of insomnia and improve overall sleep efficiency. This is particularly beneficial for individuals who experience difficulty falling asleep or maintaining sleep throughout the night. (Figueiro et al., 2012)
By minimizing exposure to blue and green light wavelengths in the evening, individuals may experience increased alertness and cognitive performance upon waking in the morning. This can contribute to a more refreshed and energized start to the day. (Chellappa et al., 2011)