Alarming new science shows that thin air can wreck brain cells—at lower altitudes than you'd think. Here's how to protect yourself.

Turns out your old PE coach was right. Yes, it hurts, but the new thinking about athletic pain is clear: Keep moving.

The 12 most common, performance-defeating fitness mistakes, and how to fix them

I constantly sprain my ankle playing basketball. Do you have any suggestions on how to improve my ankle strength and balance to prevent this?

Put that weekly jog to rest and take your training to a new level with our guide to technique, gear, and recovery

Ever wonder how it feels to get attacked by a shark? Spend seven weeks lost in the jungle? Get buried by multiple avalanches? Brace yourself for 10 of the hairiest survival stories ever told—and the life-saving tips you can learn from them.

Put down that dumbell and pay attention: Your eyes need training, too. Upgrade this all-important organ with our complete guide to better vision.

Rule number one for total physical fitness? Where your back goes, all else follows. Keep yours in top shape with our guide to strength, flexibility, and injury treatment.

Kick off the year by snuffing out stress, playing more, eating right, and keeping fit enough to nail any adventure.

To find your limits, you must go past them

We cull 25 years of the best of Outside's esteemed Bodywork section to bring you the best advice on terrain hucking, knee recuperation, injury prevention, and more.

Want an unbreakable superstructure? Building tough bones can be as easy as grabbing your skis and charging bumps all day long.

Three Kiwis are readying to kayak almost 400 miles around the South Atlantic Ocean island made famous by Sir Ernest Shackleton's fated Endurance expedition

I would love to jog, but my knees swell. Can I build stronger knees and, if so, how? Should I just hike and use a treadmill to get the se exercise effects and just forget about running? Kathryn Moundsville, Virginia

Embrace the summer sun with an intelligent skin-protection strategy

The insurance industry amps up with specialized policies for thrill seekers

Dowhill Fitness: Skiing Workouts

For an injury-free season on the slopes, limber up before you go

A new test for bike saddles promises to protect you from getting numb or falling limp. Go nuts!

Chase your travel dreams with 48 handpicked adventures guaranteed to satisfy every type of wandering soul

I see plenty weight lifters in my local gym wearing lifting belts. Sure, they seem like a good idea, but do they actually work? Michael Mirolli Seattle, Washington

I get sunburned every time I go skiing. What SPF should I be looking for in my sunblock? Dian Goodspeed Albany, New York

Got insurance?: a bite will hurt but the evacuation cost is deadly. Q: I plan to sail around the world over the next three years. Can you recommend a good international insurance policy that covers emergency medical evacuations? — Mark Downing, Portland, Oregon…

Stay nimble with our foolproof, made-to-order regimen

Your well-tailored fitness program may be missing something important—a regular massage. Here's our hands-on guide to the right rub.

Then pay attention, because there's more to posture than walking around with a book on your head

As often as we use them, we can't help but abuse them. Or can we?

Heed those rusty hinges now, and they'll work more smoothly when it really counts

Coping with that oh-so-troubling lumbar region