Your sign rules the joints, teeth, bones - and your knees are especially prone to injury, swelling, bruises, cuts and aches. So, what can you do besides walk around with knee pads on?
Invest in good shoes. And you need pairs for every occasion - running, walking around, standing for long periods, dressing up. You need to be comfortable or your knees take the brunt and you can end up with major pain.
Whatever way you get exercise, make sure you stretch and go easy. Running and sports like baseball, football, and tennis are all really hard on the knees, so be careful and do break out any gear that will protect them.
Exercise like yoga and swimming is best for you, though!