one of the things I had to KNOW in order to recover from health anxiety was that your mind/body can and will produce all kinds of symptoms from anxiety. I now know and understand that when I get stressed or anxious my body reacts physically. I'm not worried about diseases anymore. Oh one day I may well get one, but I am not going to spend my days worrying about aches/pains. I still get stressed/anxious about things. That's life and it will happen. But now since I've learned so much about how anxiety/stress can affect my body, I can almost always see the trigger and/or see that a lot of small annoyances finally tipped the scales are causing a reaction.
Since you have a lifting job, there is no doubt you'll have a lot of muscular aches and pains. You know that logically, right?!
The thing is those things are getting you to ruminate. That increases your anxiety--consciously or subconsciously. Then the ole mind/body starts getting worked up and TA-DA physical symptoms.
Here are some of the things that have happened to me. It isn't a complete list but it's enough to get you to believe that anxiety can and will cause all kinds of crazy problems.
*Shocking pain down thigh and left arm--due to herniated disks
*Sciatica pain--due to stress and the disks
*numbing and tingling over various parts of my body--fingers/toes/hands/feet/back/legs/stomach/groin etc
*Twitching/spasms---all over my body. My right thigh sometimes twitches quite hard--the entire muscle
*muscles feel weak/fatigued/heavy
*patches of skin or limbs that feel wet
*burning skin or chilled skin
*vision--jumpy eyes (not eyelid twitching, though I've had that), blurry vision, floaters (which have ZERO to do with MS), sore aching eyes, pain behind eye orbits
*sore aching muscles and joints--name a muscle and a joint and it's hurt me
*headaches---that just won't go with meds
*sharp/shooting/jabbing pains down my arms or legs or stomach or head
*dizziness--sometimes mild; sometimes I've been off balance. Once it was a 'dizzy day'-I spent most in bed
*head feeling swirly
*jolting awake, trouble sleeping, waking with a panic feeling
*trouble saying words--saying the wrong word repeatedly
*face pain--primarily my right side of face--pressure
*Stress incontinence--buy hey I've birthed quite a few kids
I didn't have all of these at once. Some were one at a time. Some came in groups. Some lingered, while some showed up once to scare the pee out of me. Twitching well, hell, that's practically an old friend now. Buzzing seems to want to become just as familiar.
I hope this helps you some. I know for me believing my mind/body could react this way to stress was a big eye opener. It helped a lot.