Rhyeumatoid Arthritis
To jump with stiff legs means to lock your knees.
I
you are sick or getting old
Supple means that they are flexible or easily bent, i.e. not stiff.
To be honest the answer to your question is that this product might hurt your knees based on my experience with ankle weights, I did feel pain and soreness on my knees as well as my ankles and calf muscles.
No, I don't, but if I had a headache with a stiff, painful neck I would certainly go to the ER to get checked for it.
Tubercular infection of joints causes a form of arthritis that most often affects the hips and knees. The wrist, hand, and elbow joints also may become painful and inflamed.
Arthritis can.
Some causes of painful urination can be a Urinary Tract Infection or possibly prostate problems. It is always good to see a doctor if painful urination persists.
if theyre locked the whole way through then its a stiff legged deadlift which will target your lower back and hamstrings. in a proper deadlift the knees should lock out at the top of the movement.
You do