I have been dealing with a sudden weakness in my left arm. There is no pain or numbness in my arm, shoulder, back or chest. This isn’t a small decrease. I have probably lost about 100 lbs on my bench. I did a test with dumbbells, right arm did 50 lbs no problem (probably stopped at 12-15 reps, but could have done many many more). Left arm got 6 reps. I was doing chin-ups which also felt harder (but not to the degree that bench felt harder), I was told I looked very lopsided. Additionally, my arms fall asleep at night almost every night. Not sure if that is normal or not?
I am leaning towards an impinged nerve. I would think I would have pain if this were the case though?
I have now been dealing with this for about 2 weeks, with no improvement. I have been taking it really easy. Only light pressing (I think I have done a single at 185, and my recent 1rm is 385). Light rowing on the cable machine. I have been doing legs as those don’t seem to be impacted. I have been doing SSB and camber bar to not strain the shoulders or biceps. I hate training like this! I don’t think pushing things makes sense right now though.
What are your thoughts? Should I get an MRI? I have talked to a friend that is a PT and a friend that is a chiro. They are also leaning towards impingement. The chiro thinks it is in part overtraining, but I wouldn’t expect this much of a drop off?