If I drive or ride anything on any circuit, particularly Cadwell or the Nordschleife, I feel sick within half a dozen laps, (one at the Ring'). I remember Jochen Rindt complained of nausea at Clermont-Ferrand (I think) and that James Hunt experimented with a drinks bottle in his McLaren at the Nurburgring because it made him feel unwell, (not to be confused with his pre-race nerves vomiting). Also quite a few drivers said that the Caesars Palace track made them feel ill too. So just how common a problem is this? And how do people deal with it? Any answers welcome.