If you've ever laced your fingers together, turned your palms away from you and bent your fingers back, you know how knuckle cracking sounds, but do you know why you crack your knuckles, what causes the sound and whether it's harmful?
Lumbar lordosis, also known as swayback, is a condition in which the spine in the lower back (lumbar region) has a major inward curve or arch.The human spine is normally curved to reduce shock and distribute weight evenly along the length of the back, but if the curve is too exaggerated it places stress on other parts of the back, leading to back muscle pain or spasms.
The American playwright Wilson Mizner once said that the amount of sleep required by the average person is five minutes more. Most of us will agree with that, even without realising that short sleep duration can lead to overweight, mood problems, chronic illness and can even make you feel pain more intensely.
Collagen is a protein found in mammals and is the most abundant protein in the body (it makes up about 30% of the proteins in humans). It is the major component of connective tissue such as skin, ligaments and tendons and is also found in bones, cartilage, blood vessels and the gut.