I used to use any 'ol stick I could find, but last year my wife gave me a pait of EMS Alpinist trekking poles. Now I can't imagine hiking without them. Regular sticks are very helpful, but a nice cork handle that is shaped for the hand is very nice, and more importantly, the wrist straps are the best. When properly adjusted, they take all the strain off the hands and I just don't get as fatigued as without them. Slippery downhills are no problem, and long uphills are much easier. Hauling a good size pack in a breeze with the extra support, and uneven terrain in much easier to traverse with the extra balance added by the poles. I suggest to everyone who is interested in hiking to get a good pair of trekking poles - you won't be sorry (and your knees will love you for it )