Fitness basics
Learning Center
Penis fracture: Is it possible?
Know the signs and symptoms of a penis fracture.
PSA levels: Can they rise after partial prostate removal?
A number of factors can cause PSA levels to rise after surgery for an enlarged prostate.
Newborn sleep: Should I wake my baby for feedings?
Get the facts about when to wake a sleeping baby for a feeding.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Loss of sex drive in men: Natural with aging?
Age-related loss of sex drive is normal, but sometimes an underlying condition is at play.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Infant growth: What's normal?
Infant growth rates depend on various factors. Consider what's typical during baby's first year.
Induced lactation: Can I breastfeed my adopted baby?
With time and dedication, breastfeeding without pregnancy (induced lactation) might be possible.
Heart rate: What's normal?
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a problem.
Heart failure and sex: Is it safe?
Many people with heart failure worry that sex might harm their hearts. How do you know when it's OK to be intimate? Cardiac rehab and counseling can help.
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