does a loose backpack really make you tired faster?

Last weekend, I went hiking with a group of friends at the state park. The weather was perfect, but halfway through the trail, I started feeling oddly tired—even though I’d had a good breakfast and slept well. My backpack kept shifting around, and the straps were digging into my shoulders. One of the guides said that if your backpack isn’t fitted right, it can actually reduce blood flow to your head and make you feel more fatigued. I’ve always thought a loose backpack was just uncomfortable, but could it really mess with your circulation that much? I’m starting to wonder if all those times I felt wiped out on hikes were because of my gear, not my age! Has anyone else noticed this, or is it just another hiking myth? I’d love to hear if anyone’s had the same problem or found a fix that actually works. It’s so frustrating to plan a great day outdoors and end up feeling exhausted for a reason you never expected. #hikingtips #backpackproblems #outdoorlife #Travel