If your TV is “smart,” I have bad news. It’s probably keeping an eye on everything you do and sending that info back to advertisers.

You can stop that, at least to some extent. Tap or click for settings to change on your television to stop this privacy invasion.

The same is true for your streaming devices and services. Tap or click to limit tracking through Netflix, Amazon, Roku, Hulu and more.

With your privacy bases covered, consider your health. Here are a few tips to minimize eye strain, neck strain and eye fatigue.

“You’re going to ruin your eyes!” We all heard that as kids sitting in front of the TV, right? Watching TV probably won’t cause lasting vision damage, but it might strain your eyes.

A mellow, dimly-lit room is the best way to watch TV. Open windows, glaring track lights, and other distracting illumination sources make your eyes work overtime.

You don’t need a bunch of fancy smart lighting or gadgets, either. Draw the blinds, turn off the house lights, and stick to incandescent over LEDs if you prefer not to go full-on black-out mode.

Lamps and other lights can cause annoying reflections and glare. Choose ambient light sources muffled by diffusive domes or lampshades.

2. Smart formula to know if you’re too close

When it comes to eye health, you should sit far enough from the TV so your eyes won’t be exposed to excessive glare.

The secret formula: Measure the width of your TV and multiply that number by five. This distance is the ballpark you should shoot for in your home theater, living room, or any other spot you have a TV. Now, it’s harder to stick to this formula with larger TVs.

The size of the room, the shape and number of seats you have to configure, and other factors like window placement also come into play. Some give or take is fine. Aim for at least about 10 feet away if you can.

A TV installed too high or low can cause eye and neck strain. The most comfortable viewing experience is with the TV around eye level when you’re sitting. So, how do you set it up? Use a laser pointer or a long measuring tape to find your direct line of sight from the best seat in the house.

Have a friend or family member lightly mark the spot on the wall with a pencil. If you’re working alone, do your best to remember where the marker hit during the experiment. The center of your TV screen should sit about where you marked.

Bright, concentrated blue light is harsh on your eyes. That’s why staring at your phone in a dark room can feel so jarring.

Is your TV backlit? An OLED? What HDR capabilities does it bring to the table? All this impacts what brightness is best. Your eyes will also give you lots of clues. Do you find yourself squinting when the room is dark? The TV is probably too bright.

Check your TV’s user manual or click the settings menu to find the brightness. Don’t just rely on one of the pre-sets. Tune up and down and see what’s best for your space.

Take some time to play with color temperature, HDR settings, and image saturation, too.