I ran my duplex for the first time with any real distance yesterday. I had about 30lbs. in it for 5-6 miles. I had some cramping in the middle of my back just below my shoulder blades. What am I doing wrong?
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Pretty sure you're a masochistit took me a few days to learn to dial my rig in, the proper adjustments to the belt, load lifters and delta straps completely changed everything once Aron got me squared away over the phone. I proceeded to punish myself with a week long alpine trip fishing above 10,000' with a 75lb load. No problems. We stopped climbing when the snow got deep and the lakes were frozen over. I'm 54, have a bad back (from 6 motorcycle spills) and pound a keyboard 75-90hrs a week. If I can do it, so can you.
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Yup. Just because it's an 800 dollar pack doesn't mean there's still not a load on your backIt's probably just cramping. If you are just getting used to a load, cramping is very probable. With any pack. You are tweaking muscles unfamiliar with the new activity.