A Sunnier Outlook
There really is something to the "happy yogi." Doing one hour of asanas-a sequence of standing, sitting and balancing poses helped avid posers raise their levels of the brain chemical GABA (low levels are linked with depression) by 27 percent compared with a group who read quietly, a study from Boston University School of Medicine and McLean Hospital reports.
More: A Yoga Workout for Your Happiness
Aches Erased
Put nagging lower-back pain behind you. Sufferers who did two 90-minute yoga classes a week for about six months eased soreness by 56 percent, a study in Spine shows. Those given treatments like pain meds and physical therapy lessened the hurt by only 16 percent. Posing improves posture and strengthens back muscles to keep aches at bay, researchers say.
More: 5 Exercises to Improve Your Posture
Better, Longer Zzz's
Insomniacs fell asleep 15 minutes faster and slept an hour longer each night after two months of doing a 45-minute series of yoga poses daily before bed. Researchers from Brigham and Women's Hospital speculate that regular practice helped people relax, making it easier to switch off.
More: 3 Reasons You Should Sleep More
Steamier Sex
You can amp up your desire and ensure an O-mazing time between the sheets by practicing daily asanas, a study from The Journal of Sexual Medicine suggests. The love connection: Yoga helps reduce anxiety, increase body awareness and even speed the release of hormones that rev arousal. All of that translates to a boost in libido, lubrication and ability to achieve orgasm, experts say. If you can't squeeze in a daily session, two hours a week may make a difference. Yoga—satisfying couples since 200 B.C.
Crazy-High Confidence
Yoga could be your ticket to body love, research from the University of California in Berkeley finds. Women who practiced regularly rated their body satisfaction 20 percent higher than did those who took aerobics, even though both groups were at a healthy weight. The secret may be that yoga asks you to tune in to how your body feels and what it can do—not how it looks.
Top-to-toe Toning
Smart yogis know dumbbells aren't the only way to sculpt. "Yoga is strength training," says Loren Bassett, an instructor at Pure Yoga in New York City and creator of Bassett's Bootcamp, a vigorous, athletic-style yoga class. "You're using your body weight to move from posture to posture, and in certain poses, you're lifting every pound of it." For surefire firming, focus on muscle-building asanas, like Crow, Crescent, Warrior III and plank.
More: Yoga Poses to Help You Stay Slim
A Sense of Calm
Namaste the stress away! Women who had gone to the mat at least once a week for two years or more released 41 percent less of a tension-triggered cytokine (a type of protein) that can make you feel tired and moody compared with yoga newbies, a study in Psychosomatic Medicine notes.
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