Aerobic exercise
Learning Center
Exercise intensity: How to measure it
To get the most out of exercising, aim for moderate to vigorous exercise intensity. See how to judge your exercise intensity.
Feeding your newborn: Tips for new parents
Learn what you need to know about feeding your newborn.
Flu shots: Especially important if you have heart disease
A yearly flu vaccine is recommended for anyone with heart disease. Find out why.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
HPV vaccine: Who needs it, how it works
Learn about how the HPV vaccine works, who needs it and what side effects to expect.
Hand-washing: Do's and don'ts
Done properly, hand-washing is a simple way to prevent the spread of germs and avoid getting sick.
Healthy sperm: Improving your fertility
You can take simple steps to have healthy sperm and improve your fertility.
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
High blood pressure and sex: Overcome the challenges
High blood pressure may affect sex. Talking openly with a health care provider about problems and possible solutions can help.
High blood pressure dangers: Hypertension's effects on your body
If blood pressure stays high, it can cause other health conditions. Find out more about these complications.
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