Sudden bruising on legs

I have been in sports for a long time and being physically fit and active we get to learn stuff along the way including bruises issues. Bruises are common for people with less fat. If you are very active and physically fit, you are more likely to have less fat percentage. While being fit and having little fat is a good thing, fat does have it's purpose in more ways than one. So without going out of topic, fat cushions us from injuries, the less fat we have the less cushion we have from common bump on a corner table, some things we may take for granted. But there are also conditions that may be at play so I think you should have a look at this link. http://www.buzzle.com/articles/bruises-on-legs-for-no-reason.html. Then go see your doctor or a specialist just to be sure which one you may have. cheers.

If it happens quite often, that the only time you should be concerned. Sometimes it could be caused by platelet problems or other medical conditions that affects blood.