The gap in your knowledge: gender on wheels.

Among a group of young car drivers the size of the gap perceived as necessary to allow them to drive their cars through was related to their degree of measured fatness. This relationship extended to measured height and shoulder breadth in women and self-perception of shoulder breadth in men. No relationship could be found with the premenstrual phase in women.

Sleep apnoea occurring only in REM (possible relevance of the case for some cot deaths).

A case of sleep apnoea occurring only within REM sleep in a 57-year-old man is described. It was successfully treated with clomipramine for a period. The patient probably had persistent phrenic nerve damage which accounted for, or contributed to, the phenomenon.