What's the best thing to eat before a driving test?
                                
                                
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                                    4 min read                                
                            
                                Research from Loughborough University found that even mild dehydration can cause drivers to make twice as many errors, highlighting the crucial link between your physical state and performance on the road. Knowing what's the best thing to eat before a driving test can have a similar, powerful effect on your concentration and composure, setting you up for success.