This article is from the Working Dogs FAQ, posted to rec.pets.dogs newsgroup. Maintained by Cindy Tittle Moore with numerous contributions by others.
Dog driving is not merely riding on the back of the sled issuing commands to steer the dogs. It is work! If you start doing it in earnest, you will pull muscles, fall off the sled and have to pull yourself back on the runners with one hand, run yourself ragged chasing after the team (because you fell off of the sled), run into trees, and so on. In addition to these things, a musher must "peddle" the sled. This too can be tiring since it is repetitive. Peddling is pushing the sled forward with one foot while riding the sled. This is helpful to the dogs, particularly when tired. You may also frequently get off to run alongside when the dogs are tired. Therefore, to successfully drive sled dogs, the musher must train his or her body as well. Conditioning of the musher is to a small extent a function of the type of mushing to be done. The key is endurance and flexibility over muscle bulk. Running, biking, cross country skiing and downhill skiing are all good ways to build strength. You must remember that at all times, you are alpha. If you are tired, hesitant, and uncertain, your team will pick this up and become confused and unresponsive. This can be particularly dangerous on longer journeys into the wilderness.
It should be clear from this that dogs in a sled dog team must be very well bonded to the driver. Not only does it make training much easier, but well socialized, well bonded dogs make a very good sled dog team. The dogs are looking to you as their undisputed leader, and you and they work together as a _team_. If you are careful to bond to each of your dogs as individuals, and socialize them very well with each other, other dogs, and other humans, your dogs will be willing to do virtually anything for you.
 
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