Fitness basics
Learning Center
COVID-19 and pets: Can dogs and cats get COVID-19?
Find out how COVID-19 can affect dogs and cats, what you can do to protect your pet, and how to care for your pet if it becomes sick.
Ovulation signs: When is conception most likely?
Trying to get pregnant? Learn about symptoms of ovulation
Enlarged prostate: Does diet play a role?
Lifestyle factors such as diet appear to play a role in benign prostatic hyperplasia (BPH). See what lifestyle changes may help with symptoms.
Digestion: How long does it take?
Digestion takes about two to five days, depending on your system.
Swallowing gum: Is it harmful?
Your body can't digest chewing gum. So what happens when you swallow it?
Scalp psoriasis vs. seborrheic dermatitis: What's the difference?
Learn how to tell apart these common conditions of the scalp, both of which cause inflamed, scaly skin.
Bacterial vs. viral infections: How do they differ?
Understand the differences between bacterial and viral infections.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Yeast infection in men: How can I tell if I have one?
Yeast infections can occur in men, causing inflammation of the penis (balanitis). Learn what signs and symptoms could mean you have a yeast infection.
HER2-positive breast cancer: What is it?
HER2-positive breast cancer tends to be more aggressive than other types of breast cancer. Treatments that target HER2 are very effective.
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