Ive been skating all my life ever since I was 3 (Im 16 now). Recently I found out the cause of pain that was happening on my hamstrings and why the were to tight after going balls out for 30 seconds. (Latic Acid). But when i fixed my problem  my thighs haven been starting to get tighter and more tired which would never happen to me. Im not sure what the problem is, my team works out 2 times a week and personally I go an extra 2-3 times by myself. Does anyone know a way to get rid of this feeling