I started the morning off with 1 hour of bootcamp (which we did lots of lunges) then a 2 mile run. Then in the evening I did a 4 mile run right before another 1 hr of bootcamp. I felt great, and my muscles had very minimal soreness.
10 minutes into my 2nd session of bootcamp I stepped to do a forward lunge and my Right leg collapsed. I gathered myself, and tried again, my left leg was able to do a lunge, however when my right leg stepped forward to lunge, instead of flexing, my quad would completely relax, causing me to lose my balance.
It was odd because I felt no pain or weakness in my leg. I was able to do squats, climb stairs, extensions, flexion. I had a full range of movement.
I massaged it with a roller, and completed the remaining 40 minutes of bootcamp substituting squats for lunges.
After bootcamp, I had another 1 hour of yoga. I debated on not going, but I thought yoga would help, and it did. I was able to do the warrior pose, which is pretty much a lunge.
What I discovered, was probably due to my sudden increase in exercise my muscles were a bit swelled which pressed on the nerve and all the lunges from the morning plus a total of a 6 mile run, my quads and hips were tired. So, as I tried to do another lunge, my femoral nerve fired as a defense mechanism causing the muscle to completely relax in-order to protect my quads from straining or worse, tearing.
Its a little wake-up call when your body actually prevents you from doing something because it knows something bad is about to happen.
often time people say, mind over body.. well this time the body won.
After a epsom salt bath, a night of rest and more yoga, my leg is fine now, and able to do lunges again.