lunges & sharp thigh pain

AlexHab

I am pretty new to fitness and just recently started to do full lunges, knee touching the ground (before my legs were not strong enough to do a full set). But now I have a problem with left thigh pain - when the left knee is about to touch the ground, I feel a sharp pain through the whole thigh. When I release, the pain is gone completely. I can still do other leg exercises with no pain whatsoever - lunges on the other leg, squads etc. (also no pain when resting). Could it be that my muscle on the left thigh is just not flexible enough? And if so, does anyone have any tips how to correct it?
Thanks in advance.

Shortgirlrunning

It sounds like that muscle isn’t flexible enough to go all the way to the ground. That’s fine. You don’t have to touch your knee to the ground to do a proper lunge. Definitely don’t keep pushing it to the point that you are in pain.

Also, make sure you’re warming up before working out and stretching afterward.

Cherimoose

Try warming up first with a couple sets of split squats (stationary lunges).
I agree that there's no need to touch the knee to the ground on a lunge.