This week we learned a few simple ways to avoid the extreme negative effects of long days in your office chair, got more from the long press shortcut on the iPhone, dabbled in a new operating system, and more. Here's a look back.
How Sitting All Day Is Damaging Your Body and How You Can Counteract It
Do you sit in an office chair or on your couch for more than six hours a day? Then here are some disturbing facts: Your risk of heart disease has increased by up to 64 percent. More »
All the Awesome Things You Can Do with a Long Press on Your iPhone, iPad, or iPad touch
Long pressing-that is, tapping and holding down on a part of your screen-provides a lot of handy shortcuts on your iPhone, iPad, or iPod touch. More »
Try a New Operating System This Weekend
We write about a variety of platforms here at Lifehacker, and even if you're perfectly happy with what you're using, nothing makes you feel more appreciative (not to mention knowledgeable) than trying something new. More »
The Manual Photography Cheat Sheet Keeps You Familiar with All Your Camera's Different Settings
If you're just starting out with a DSLR camera, you're probably pretty overwhelmed with all the different settings you have available. This cheat sheet from weblog Living In the Stills will help you keep it all straight. More »
How to Look Your Best In Photos
A lot of us hate having our picture taken, but family members and friends insist on doing it anyway. If you freeze and then end up looking like a deer in the headlights in every photo, there's a few things you can do to prevent it from happening.
Photo by Jim Kelly.
The Stupid Things You're Doing... More »
Google Is Facebook Is AOL: What Happens When a Good Google Goes Bad
Two weeks ago, Google announced that they were integrating Google+, their brand new social network, with Google search results, calling the new feature "Search, Plus Your World". More »
What Should I Use for My Home Theater PC: Apple TV, Nettop, Old Computer, or Something Else?
I'm finally in the market to get a home theater PC, and I'm not sure which direction to go. You guys have advocated a number of things, from using an old PC to building your own, or even buying a cheap nettop or an Apple TV 2. More »
The Five Most Common Causes of a Check Engine Light and What You Should Do About Them
You're driving home from work one day when the car owner's worst nightmare happens: the check engine light pops on. It comes without warning and with no explanation. More »
Top 10 Tools for Finding and Moving into a Great New Home
Whether you want to rent or buy, finding a new home can be pretty tough without a little help. Thanks to the internet, that help is freely available. More »
You Don't Need All Those Chargers: How to Consolidate Your Extra Bricks and Still Power Your Gadgets
Every new device you buy seems to come with its own charging brick and cable-which is good, until you have a drawer full of them in your office, or wind up having to pack a dozen charging cables, bricks, and wall adapters before you so much as go to the library with your laptop. More »
How Do I Quit a Job I Just Started?
Dear Lifehacker,
I started a new job a month ago and now realize it's not really a good fit for me. Even after a month I'm still not comfortable and I dread going in every morning. More »
Ditch Hard Drive Clutter with an Organized, Automated Home Folder
Your home folder is the base of operations on your computer, where you throw every document, app installer, photo, and other file you'll need later. So why does it look like it's been ravaged by a virtual tornado? More »
How to Build a (Nearly) Hack-Proof Password System with LastPass and a Thumb Drive
It seems like every day there's news that a new site or service has been hacked. The intruders make off with usernames and passwords, and even if they're encrypted the service forces users to change them. More »
Windows/Mac/Linux and Android: If you've ever tinkered with your phone, you've probably heard of ADB, the command line debug tool for Android. If you're not in love with the command line, though, QtADB brings ADB's file management, app installation, and more to a friendly GUI. 
When you copy multiple files in OS X and the destination folder already has files of the same name, you don't have a lot of choice over what to do—you can either cancel the copy, or replace the files. This little trick gives you a bit more power. 
Windows' Open With menu is fine, but it's pretty basic. OpenWith Enhanced gives you a bit more control, recommending certain apps for the job over others, as well as recommending apps you don't yet have installed (and giving you a link to download them). It also adds links to the bottom of the Open With window that let you remove the file association entirely, and edit the "Open With" context menu to remove the clutter. It'll even let you change the icon associated with a specific file type. Sometimes the recommendations are a little off (why would I want to open a PDF with Notepad?), but otherwise it's a useful addition to Windows. It's a really simple install, too—just run the installer and Windows will automatically deliver these enhancements whenever you enter its regular Open With dialog.
