Sleeping with wet hair? Think twiceOne of the lowest-rated habits on Amit's list was sleeping with wet hair, which he scored 1 out of 10. His advice is simple: let your hair dry completely before turning in for the night. Brushing wet hair can do more harm than goodAmit gave brushing wet hair a 0 out of 10, making it one of the habits he strongly advises against. Amit addressed one of the most common hair myths, saying that trimming your hair doesn't make it grow faster.