Aerobic exercise
Learning Center
Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
Whole-body vibration: An effective workout?
Whole-body vibration — Don't give up regular exercise and a healthy diet.
Walking: Trim your waistline, improve your health
Walking can be an ideal low-impact exercise. Get the most from your walking routine.
Walking: Make it count with activity trackers
If walking is your main form of physical activity, see how activity trackers can help you set and achieve your fitness goals.
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
Trichotillomania (hair-pulling disorder)
In this mental health condition, people can't resist urges to pull out hair from their body. They do this often. Therapy may help reduce or stop urges.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Natural remedies for depression: Are they effective?
For some people, certain herbal and dietary supplements seem to help with depression, but more studies are needed on their effectiveness and side effects.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Mindfulness exercises
Engaging with the world around you can lower your stress. Here's how to practice mindfulness meditation.
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