It is this build up of lactic acid that causes the pain, heaviness, feeling of exhaustion, deadened muscles, and 'muscles will not work or go any faster' sensation. I am also interested in this idea because in horses there is a condition known as azoturia (tying up), which does not have an obvious human parallel.
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shared media LAN A local area network (LAN) that shares its total available bandwidth with all transmitting stations. Ethernet is the primary example, although Token Ring and FDDI networks were earlier examples. In the past, when shared media LANs ran out of capacity to serve their users effectively, they were upgraded by replacing the network hubs with switches. See hub vs. switch, LAN switch and Ethernet switch.