If you suspect you have a blood clot in your leg, Excercise is the LAST thing you need! Not all blood clots are detected! Why do you think it is called DEEP VEIN!!! Also, a blood clot on the run can end up in your heart, lungs or BRAIN. It may OR may not kill you. It could leave you in a coma, brain dead, completely paralysed or partially paralysed. It could cause brain damage and so much more. I was recently diagnosed with antiphospholipid syndrome which means that I basically am a walking talking time bomb just waiting for a blood clot to happen. And I was told that you CAN have blood clots and not know you have them.