
Your knees endure remarkable stress during everyday activities. With each step you take, research shows your knee joints absorb forces equivalent to 1.5 times half times your body weight. This impact multiplies significantly when you factor in physical labor, athletic activities, or extra body weight.
Knee problems rank second only to back pain among common musculoskeletal complaints, with joint issues often limiting mobility and diminishing quality of life. Strategically strengthening the muscles surrounding your knees can help prevent cartilage deterioration and even avoid knee replacement surgery down the road.
Dedicating just 15 minutes, three to four times weekly, to these exercises provides multiple benefits. This simple routine not only protects your knee joints but also improves balance and reduces fall risk.
1. Step-ups

Use a stair or a low step for this straightforward exercise. Push up with your preferred foot until both feet are on the step, then back down again. Alternate your lead foot with each rep.
Step-ups build your hamstrings and quadriceps using just your body weight. Strong quadriceps are particularly important since weak ones cause the kneecap to sit closer in, creating more rubbing and pain in the joint.
Start with two sets of 10 repetitions, resting between sets. The low-impact nature makes this accessible while still delivering strength benefits to key knee-supporting muscles.
2. Squats

Stand with feet shoulder-width apart and lower your body by bending your knees, keeping them aligned over your toes. Stop when your thighs are roughly parallel to the floor, then push back up.
Squats work both the quadriceps and gluteal muscles, which are critical for taking stress off the knee joint. They also improve proprioception, your body's awareness of where your joints are in space.
Squats improve bone mineral density and reduce fall risk in later life while stabilizing knees and reducing pain in arthritis patients.
3. Straight leg raises

Lie on your back with one knee bent and foot flat on the floor. Keep your other leg straight and raise it off the ground, hold for a few seconds, then slowly lower it.
Contract your quadriceps muscle before lifting to engage the muscles you're targeting. This exercise strengthens the quads while protecting the joints and reducing the risk of exercise-related injuries when used as a warm-up.
Perform two sets of 10 reps per leg, alternating between legs. The controlled movement builds strength without putting stress directly on the knee joint itself.
4. Calf raises

Stand with feet shoulder-width apart and toes pointing forward. Slowly raise your heels while keeping your knees extended. Hold for one second on your toes, then lower back down.
Calf raises strengthen the gastrocnemius and soleus muscles in your calves, relieving stress from the knee joint below the kneecap. This improves muscle balance around your knee so all surrounding muscles work together efficiently.
Complete two sets of 10 raises to start. When one muscle group is weak, you create an imbalance that puts more strain on the knee joint itself.
5. Chair stands

Sit in a chair and stand up without using your hands for support, then sit back down. Repeat this movement for your target number of reps.
This exercise works your core muscles from mid-chest to your knees, which play an underrated role in maintaining knee health. Strong core muscles help stabilize your entire lower body.
You can also make it harder by using a lower chair or doing it one-legged as you get stronger. Start with two sets of 10 repetitions and adjust the difficulty based on your strength level.
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