Now if you had a 40% decrease in your ability to deliver oxygen to your body during an average day wouldn't you be concerned? Add in fact you're asking more of your body in terms of keeping you warm in a cooler/cold environment, you are constantly losing water from your system, your reactions are slowed, and your not around corner from nearest hospital. Your mountain hiking equipment becomes a more important consideration higher altitude and more remote your location.

Depending on how cold temperatures you might encounter are you'll probably want some good insulated hiking boots (depending on altitude and temperature you may need mountaineering boots), hiking clothes, sleeping bags, camping tents, and other equipment used for hiking rated for lower temperature than what you think you'll actually experience. This will give you an extra margin of safety. Also keep in mind that mildly uncomfortable mountain hiking gear will become a bigger problem...

If you'd like more information about mountain hiking click here for rest of article. You may also want to take a look at a couple of related articles on how to pick best hiking footwear.

* Training and Supervision

No child or adult, should be allowed to attempt complicated tumbling such as summersaults, when they have not had adequate training. Incorrect landing positions can cause serious and disabling injuries. Supervision should be provided for everyone who is learning to use a trampoline for first time.

Ideally, there should be someone on hand who can instruct them in simple maneuvers, and who is also versed in first aid for injuries. Alternately, it may benefit everyone, to join a gym for a class in proper trampoline use, including mounts and dismounts.

* One At a Time

The chance of injury soars when more than one person gets on a trampoline at same time. This can be result of collisions, or upsetting another person's balance, causing them to fall. Unless you are a trained "spotter", all others waiting a turn, should stand away from trampoline while someone else is using it.