My knees hurt from lunging. What exercises help, and how much training is too much?

Tired, sore legs are normal while your body adapts to lunging, but joint pain is a signal to change something, and pain that is sharp, causes swelling, makes the knee feel unstable, or keeps coming back is a reason to see a doctor or physical therapist, ideally one who works with athletes. This page is general guidance, not a diagnosis. Knee discomfort in fencers is common, and much of it traces back to a handful of technique and strength issues that are worth checking with your coach.

Start with the lunge itself. Ask your coach to watch for the front knee drifting past the toes or caving inward, the back foot rolling over, a lunge that is longer than your legs can control, a heavy slap of the heel on landing, and recovering by shoving off a locked front knee. Shoes matter too: worn-out fencing shoes with no heel cushioning make every landing harsher. Fifty good lunges with clean form do more for you than two hundred sloppy ones at the end of a tired night.

For strength, most accepted advice focuses on the muscles around the knee rather than the knee itself: squats, split squats, hamstring curls or Romanian deadlifts, glute and hip work such as side lunges and band walks, calf raises, and wall sits. Weak hips and hamstrings are commonly linked to knees collapsing inward. Train about twice a week, start lighter than you think, and add load gradually. Inner-thigh machines in particular can feel easy in the moment and leave you barely walking the next day. Stretch quads, hamstrings and hip flexors, since fencing is lopsided and tightens one side. A knee sleeve may feel better but does not fix the cause.

Too much training is less about hours and more about recovery. Warning signs: pain that fades between sessions only to return every time, energy that drops week over week instead of bouncing back, losing to people you normally beat because you are exhausted, slower reactions, and starting to dread practice. Build in lighter days, sleep properly, and ease off heavy strength work in the week before a competition. Veteran fencers recover more slowly than teenagers, so the same schedule can be fine for one and too much for the other.