This is cellulite, a.k.a. cottage cheese thighs. Cellulite can settle in, regardless of body weight or fitness level. On some you can barely see it, yet on others it's very evident. It's that dimpling skin that looks like orange peel. It can be found on the thighs, bottom and even the tummy.
Slim women can have it too.
It is an accumulation of fat, fluid and toxins trapped into a hardened network of elastin and collagen fibres in the deeper levels of your skin. Try squeezing some of the skin on upper thigh and if it looks lumpy, you have it. The skin might also look whiter and feel colder than the rest of the body. Poor diet, stress and lack of exercise, hereditary factors, and hormones seem to play a factor in whether or not you have cellulite. Some researchers believe that cellulite is genetic, while others will tell you that cellulite is caused by eating too much fat, not exercising enough, having poor circulation, collecting toxins in your body, or maybe all of the above.