This morning it was cold... I was writing a test when I realised that my biceps hurts when I extended my arms , as if I just went for a gym session... I thought it was ok , but after the test when I stood up , the effect was also in my hamstrings... I tried to stand up with my legs fully extended, but it hurt... After a struggle I finally managed to extend it , but there was a sudden burning pain in my hamstrings... I didn’t exercise for atleast a week...