OK guys and girls I need to use a treadmill on holiday because where we go is not suitable for running, have done it before and know its not good. There is the beach which I know is wonderful but this sand running is what set off my sciatica in January so dare not risk it. So last resort is to use the hotel gym and treadmill. Previous attempts at gym here at home have left me feeling dizzy especially if there has been runners on both sides of me. Anyone got any ideas on why this is and tips on how to prevent it?