If you need to get your knees stronger there are a few knee joint exercises that are easy to do and will make a huge difference to your fitness

If you suffer from a condition called chrondromalacia patella this first exercise will be really useful. That's a roughening of the cartilage underneath the knee cap, sometimes as the result of the bones not sitting properly in the 'V' of the knee joint.

Sit comfortably in a chair, you need to be relaxed. Bend your legs as you would normally sit on a chair with your feet on the ground and your legs bent at 90 degrees, tense your thigh and hold this position for 5 seconds the release, change legs are repeat. You need to do ten reps on each leg. I told you it was easy!

Be sure to breathe normally during the exercise.

The second exercise is a little more tricky but it does help build up the strength in your knee.

Sit in a chair again, then cross your bent legs at the ankle. Push your legs forward with the rear leg then push them back using the front leg. (At first this can seem a little tricky but it is really easy once you get used to it!).

Switch the position of your legs by changing the direction of the cross. If the right leg was in front, move it to the back. Repeat this exercise ten times for each position.

Calf Burns

Now for something a little more strenuous.

For this next exercise avoid standing on a concrete or metal floor. If your balance is not to good you may be better to do the following exercise on a mat or carpet.

Stand up straight, heels together, toes slightly apart. Make sure you are well-balanced.

Lift your heels up, balance on the balls of your feet. Try to imagine an invisible string fixed to the center of your head pulling you straight up. Hold this position for five seconds, then lower yourself down slowly. Do ten reps of this. Eventually as you build up strength in your legs and increase your balance, you will be able to increase the amount of time you can stay on the balls of your feet.

To change this exercise a little try bending your knees a little once you have raised your heels and are standing on the balls of your feet. This will also work your bottom as well as your hamstrings and quads. Again hold for 5 seconds then straighten your legs and lower your heels. Repeat for 10 reps.

If you can make sure you carry out these knee strengthening exercises a couple of days a week or better still daily, you will have strong, healthy knees in to time at all.

If you want to tone up the rest of your legs, take a look at these details for the best leg exercises. These exercises will help you build strong, sexy legs quickly. To get the rest of your body into shape, find loads of fitness tips here.

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