<span>The answer is Balance. It is very important to have a good balance when walking on a beam. Even more important when a beam width is more contracted. Balance plays a roll in the ability to keep upright and not fall down, and in the case of standing a beam, balance does just that.</span>
Keeping automated external defibrillators are kept in public places, so if a person goes into cardiac arrest, has a better chance of being revived and survive without a lot of brain damage.