Hi, I am a 19 year old female and I have noticed something interesting. Any time I exert any effort to complete an act of strength like turn on the shower, open bottles, lift a mini fridge, etc it is really hard to do it, but when I completely slack my muscles, my strength increases signifigantly to ripping off shower knobs, being able to do pushups, etc. I was wondering if this is normal and maybe I just didn't know it or if it might be an issue. I also have a problem with experiencing certain sensations, like I was stirring a boiling pot of pasta and didn't even realize my hand was in the water for like 2 minutes. My whole hand was red and dripping wet but I didn't even realize. Other times I have increased pain, like I bumped into a pole and I didn't think I hit it that hard but I felt like I had broke a bone and my arm was bruised. I don't have health insurance right now, so I'm just wondering what it could be and if I should be concerned