Strength training
Learning Center
TMJ disorders
Treatment options for pain in your jaw joint and in the muscles that control jaw movement can include pain management, medical therapies and surgery.
Superslow strength training: Does it work?
Superslow strength training can help you add variety to your strength training routine.
Sunburn
Learn more about how UV rays harm your skin and what you can do for symptom sunburn relief and how to protect yourself from sun exposure.
Sun damage
See photos of common skin conditions that are caused by too much time in the sun.
Suicide and suicidal thoughts
Suicide can be prevented. Learn suicide warning signs and how to reach out for immediate help and professional treatment.
Sudden death in young people: Heart problems often blamed
Sudden cardiac death in young people is rare. It's not the same as sudden cardiac arrest. Learn about the risk factors and causes and when screening is needed.
Stress incontinence
Movement such as coughing, laughing and running can cause urine to leak for people with this condition. Learn about treatments and self-care.
Strength training: Get stronger, leaner, healthier
Strength training can help you look good — and feel even better.
Stool DNA test
Learn about this noninvasive colon cancer screening test that can detect DNA changes in cells collected from a stool sample.
Step it up: 7 quick stair exercises to do at home
A creative stroll up and down the stairs tones the legs and may even control blood sugar. Try these seven easy stair exercises right now.
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