Jolted awake every time your partner rolls over or gets up? Here is why partner movement wrecks your sleep, why some mattresses transfer motion and others do not, and how...

Same room, same noise, one of you sleeps and one of you does not. Here is why light sleepers are so sensitive to their sleep environment, what your brain is...

The same mattress feels firm to one person and soft to another, and body weight is why. Here is how weight changes mattress support and firmness, the best firmness for...

Bought a great mattress that sagged in a year? If you are a heavier sleeper, that is common and usually not your fault. Here is why more body weight makes...

How much cooler does a cooling mattress really get? We explain what cooling degrees measure, convert the common claims between Celsius and Fahrenheit, and translate 8C and 11C cooler into...

If a click, a shift or a warm patch of mattress pulls you out of sleep, you are a light sleeper. Here is what makes some people wake so easily...