Although countless studies have shown how beneficial exercise is for your body and mind (it may do everything from reducing the risk of some cancers to helping improve memory), less attention has been paid to flexibility. But doctors and physical therapists agree that it's a vital part of keeping your body fit and able.
"Flexibility is the third pillar of fitness, next to cardiovascular conditioning and strength training," says David Geier, the director of sports medicine at the Medical University of South Carolina, in Charleston, and a spokesperson for the American Orthopaedic Society for Sports Medicine. In fact, flexibility can help your body reach its optimum fitness level, may play a role in injury prevention, and can even contribute to staving off conditions like arthritis and more serious illnesses.
Here's how it works: When you stretch a muscle, you lengthen the tendons, or muscle fibres, that attach it to the bone. "The longer these fibres are, the more you can increase the muscle in size when you do your strength training," says Geier. That means that a more flexible muscle has the potential to become a stronger muscle, too.
In turn, building strong muscle fibers may boost your metabolism and your fitness level.
Flexible muscles also make everyday activities easier on your body and may decrease your risk of certain injuries. Common behaviours, like hunching over the computer, can shorten some muscles. That, along with the natural loss of muscle elasticity that occurs with aging, can set you up so any quick or awkward motion (lunging to catch a glass before it teeters off the table, for example) could stretch your muscles beyond their limit, resulting in a strain or a tear.
"Even if you're aerobically fit, it helps to be limber, too, so your body can easily adapt to physical stressors," says Margot Miller, a physical therapist in Duluth, Minnesota, and a spokesperson for the American Physical Therapy Association.
What's more, stretching may improve your circulation, increasing blood flow to your muscles. And having good circulation can help protect you against a host of illnesses, from diabetes to kidney disease.
Greater flexibility has even been linked to a lower risk of cardiovascular disease. A 2009 study in the American Journal of Physiology indicated that people age 40 and older who performed well on a sit-and-reach test (a seated forward bend that measures flexibility) had less stiffness in their arterial walls, an indicator of the risk for stroke and heart attack.
How to get and stay flexible
The general rule of thumb is, you need to be as flexible as your lifestyle dictates, says Malachy McHugh, director of research at the Nicholas Institute of Sports Medicine and Athletic Trauma at Lenox Hill Hospital, in New York City. For example, in the world of sports, long-distance runners are known to be notoriously inflexible. But that's okay, because their bodies don't need a lot of flexibility to move forward in a relatively straight line, says McHugh.
The rest of us need a level of flexibility that's somewhere in the middle. To increase your flexibility, start with about ten minutes of stretching a day, focusing on the major muscle groups: upper body (arms, shoulders, neck), back, and lower body (thighs, calves, ankles). Then, focus on specific stretches for problem-prone areas. So if you're pretty much parked at a desk from nine to five, you'll want to give extra attention to your lower back and shoulders. If you're on the move–picking up toddlers and bags of groceries, perhaps–concentrate on your hamstrings and arms.
Sretching just a few times a week can be nearly as beneficial. In fact, that may be enough to help you stay supple once you've gotten there. A study published in the Journal of Strength Conditioning and Research found that after stretching every day for a month, participants who went on to stretch just two or three times a week maintained their degree of flexibility. Those who stopped stretching, however, lost about seven per cent of their hip range of motion within a month.
Of course, you may find that stretching becomes one of your favourite parts of the day. Since you need to focus on even, deep breathing while listening to your body, stretching is a great relaxation or even meditation break. "The more you do it, the more you will get out of it–both physically and psychologically," says Geier. (www.realsimple.com)