I saw a post by Jeff Morton saying that it takes only 4% of maximal muscle strength to flex the elbow. That means 96% of strength is...

With OA the most common thing people do is stop loading the knee when they feel pain: OA is when cartilage starts to break down or we...

Lumbar flexion is bad when lifting or at least we must always keep our back in extension when lifting is the simple blanket statement...