Studies say: people who don’t sleep enough are three times as likely to get a viral infection An under-reported way to slow down the spread of viruses is better sleep By being more flexible, employers, schools, and individuals can make changes to encourage sleep. If you can, please share this advice with your employer. Wash your hands and get more...

This bill became law on October 13, 2019. August 31, 2018: SB328 has passed the State Assembly with 41 votes! For information or to get involved, please visit Start School Later. About the bill: California SB328 says that middle school and high school students may not start school before 8:30 Exceptions are made for a zero period, and for rural...

iPhone X emits twice as much stimulating light as an older iPhone, but you can’t tell just by looking Studies of older iPads have shown us how light from devices affects circadian rhythms. But despite being smaller, the new iPhone X makes more light than old iPads did. The new OLED screen has a high-powered green color, and both blue...

Apple announced this week that they’ve joined our fight to use technology to improve sleep. There is a lot to be done. Indeed, workers on the “night shift” have nearly double the lifetime risk of cancer [1], and much of this is believed to be driven by exposure to bright light at the wrong times. Apple’s involvement in fixing this...

We’ve put together a list of some of our favorite things. Many of the books and products listed are ones we use and like a lot. Most links have affiliate codes, so if you buy something from this list, we’ll get some money and you’ll get the happy feeling of finding a great gift and helping to support f.lux development...

We know that big screens have a big impact on sleep. But what about smaller screens like smartphones? Screen size, brightness, and distance from your eye all matter, just like color. So a small screen should look a lot dimmer to your body. But a lot of people, especially kids, like to use phones really close. So we started our...

A study published today in PNAS shows that reading a backlit device before bed makes your sleep measurably worse than reading a paper book under dim light. According to the study: While people are using an iPad at night their body produces 55% less melatonin After shutting off the lights (and the iPad), they took an extra 10 minutes to...

Using screens at night adversely affects sleep, but there are some things you can do to help protect your eyes. Click here to read about a new study, published in PNAS, that measures the sleep impact of reading an iPad before bed. Adjusting your screen Learn how to adjust your device’s brightness, and dim it as far as possible at...

If you have a dual GPU mac, f.lux v34 will install a “f.lux profile” while it’s running, in order to avoid flashing as OS X switches between video cards. You can see this in System Preferences > Displays > Color. This new profile preserves everything in the system profile except the display table, and it reverts to the normal one...