What are the best exercises for people with bad knees?

For people with bad knees, low-impact exercises are ideal because they strengthen the surrounding muscles without putting excessive stress on the joint. Swimming and water aerobics are excellent choices since the buoyancy reduces joint load. Cycling, either on a stationary or regular bike, builds quad and hamstring strength with minimal impact. Walking on flat surfaces is also generally safe and beneficial. Strength exercises like straight leg raises, clamshells, and seated leg presses at low resistance help stabilize the knee by strengthening the quadriceps, hamstrings, and glutes. Stretching the hip flexors and calves also reduces knee strain. Always avoid deep squats, lunges, or high-impact activities, and consult a physical therapist or doctor before starting any new exercise program.