Often sacrificed in the rush of modern life, a good night of sleep is quietly one of the most powerful things we can do for our brain, our heart and our overall health

In our busy and endlessly connected modern world, sleep is very often the first thing we are willing to sacrifice whenever life becomes hectic and the precious hours of the day grow short. Yet a growing mountain of scientific evidence now makes it wonderfully clear that a good night of rest is not a luxury at all, but one of the true foundations of a healthy and happy life.

The third pillar of good health

For many long years, most of us were taught that staying healthy rested on just two great pillars, namely eating well and moving our bodies often and vigorously. Today, however, doctors and researchers increasingly speak of a vitally important third pillar that stands right alongside the other two, and that essential pillar is nothing other than regular, restful and good quality sleep.

It turns out that no matter how carefully we choose to eat or how faithfully we manage to exercise, our bodies simply cannot function at their very best without enough proper and restorative rest. Sleep is the quiet time during which almost everything we do throughout our waking hours is gently repaired, carefully restored, and made ready once more for another busy day ahead.

A busy night for a resting body

Although sleep may look completely still and peaceful when viewed from the outside, the simple truth is that our bodies and our brains are in fact remarkably busy all throughout the entire night. Far from simply switching themselves off, they move steadily through several carefully ordered stages of sleep, each one quietly carrying out its own particular set of vital and restorative tasks.

During these precious and unnoticed hours, our heart rate and our blood pressure both gently fall, giving the hard working heart a truly valuable chance to rest and recover from the day. At the very same time, damaged tissues are quietly repaired, important hormones are carefully rebalanced, and the body steadily rebuilds the energy reserves that we will surely need once we finally wake.

Cleaning the mind while we dream

Perhaps the most fascinating discovery of recent years is that sleep appears to act as a kind of gentle nightly cleaning service for our busy and endlessly hard working brains. While we quietly slumber, the brain becomes especially active in clearing away the various waste products that naturally build up within it during all of our long waking hours of thinking and doing.

It is also during this quiet and restful time that the brain carefully sorts through everything we have recently learned and experienced, storing our most important memories safely away for the long term. This is exactly why a truly good night of sleep can help us to think more clearly, to concentrate far better, and to remember valuable new information with much greater ease.

A shield for the heart and body

The many benefits of a good night of sleep reach very deeply into almost every single corner of our physical health, quietly protecting us in ways that we very rarely stop to notice. Getting enough rest helps to keep our hearts strong and healthy over the years, and it has been closely linked to a lower risk of serious problems such as heart disease and stubbornly high blood pressure.

Sleep also plays a surprisingly powerful role in supporting our immune system, which is our body's own natural defence against illness and infection. While we rest, certain immune cells become noticeably more active in fighting off infection, which helps to explain why a tired and poorly rested person so often seems to catch every passing cold that happens to come along.

How much sleep do we really need

A very natural question that a great many people often ask is exactly how many hours of sleep a person truly needs each night in order to enjoy all of these wonderful benefits. For the great majority of healthy adults, experts generally recommend gently aiming for somewhere between seven and nine hours of good quality sleep on each and every night of the week.

It is well worth remembering, however, that the overall quality of our sleep matters quite as much as the total number of hours that we happen to spend lying in bed. A shorter night of deep, unbroken and truly restful sleep can very often leave us feeling far more refreshed than a much longer night that is constantly interrupted, restless and disturbed.

Small habits for better nights

The genuinely encouraging news in all of this is that most of us can noticeably improve our own sleep simply by gently adopting a few easy and pleasant habits into our daily routine. Going to bed and waking up at roughly the same time each day, even on the weekends, helps to keep the body's own natural internal clock steady, calm and beautifully well balanced.

It also helps a great deal to wind down slowly in the evening, to dim the harsh bright lights, and to set aside our glowing screens for a good while before finally settling down to rest. By treating our sleep with the very same care and respect that we so readily give to our diet and our exercise, we hand ourselves one of the finest gifts of all, the gift of lasting good health.