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It's that early childhood message that causes people to bite off more than they can chew. Of course we can do it -- so what if we're a wimpy, little, good for nothing train designed perfectly well for other tasks - we can do it, we can haul the heaviest thing you throw at us - all it it takes is the power of believing.
Sigh.
While I love for my clients to push themselves, I actually have a few clients who actually push too hard. It's a fine line between exertion and getting to the precipice of fainting into a pool of one's own sweat. One of the guys I train that does this reads the blog and I hesitated to write about it because I don't want to sacrifice the trainer confidentiality clause, but hey - it's all positive things I'm writing about.
Sort of.
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The truth is that the first time(s) on any exercise is pretty much always a guessing game. Until I know my client's abilities I make guesses on what I think they ought to be able to do. Sometimes I overestimate. Actually I usually try to overestimate because I don't want the clients to think that I think they are a nelly weakling. Most of getting through an intense workout is mental (the rest is good hydration, plenty of sleep, and energy food). At any rate the first few times with a new client is when there are scary moments of near fainting, throwing up, or severe dizziness.
I had one guy who seemed like he could do anything. It was our first time so I just assumed he was a hardcore powerhouse. I kept him moving and lifting heavy weights. Next thing I know he's throwing up. That was the end of that workout. He never even hinted that he was having trouble, he just keeled over.
The "Little Engine" effect can have hugely positive results, or hugely negative ones if the engine overheats. I say haul a huge load but keep the chasis lubed and the engine tuned up. Fill up with lots of good fuel and suck in a lot of air. Now that's a lot of innuendo.