My girlfriend keeps waking up in the middle of the night and wanting sex — it is great in theory, but it’s wearing me out. It used to be a rarity, but now it happens at least once a week. She seems able to get back to sleep quite easily, but I really struggle. I am exhausted.

Having even one night of disrupted shut-eye could age us, research shows. A sleep expert tells Margaret Jennings why those 40 winks are important to your health.

Smartphones, computers, and tablets are contributing to an epidemic of sleep deprivation, research shows.

DEPENDENCE on televisions, mobile phones and laptops may be costing Americans dearly — in lack of sleep.