How I Ran a Sub-3-Hour Marathon While Maintaining Muscle
FITNESS

How I Ran a Sub-3-Hour Marathon While Maintaining Muscle

By Sahil Bloom - author, investor, entrepreneur, and Innerbody featured contributor

Trusted research for your health

Image of the human body

Learn About the Human Body

Whether you're a student or simply curious, use our Anatomy Explorer with 2D and 3D interactive models to learn all about human anatomy and physiology.

Browse by Category

HOW WE DELIVER RELIABLE INFORMATION

Products and services are tested independently by our experts

We purchase and test hundreds of products and services each year to provide the most in-depth, actionable product comparisons possible so you can make decisions with confidence.

Magnifying glass examining papers

80,000+

Hours spent testing and analyzing products to give you the most accurate recommendations.

An award and plaque

171

Collective years of health and research experience in our team.

Every article is written and reviewed by medical professionals

Our researchers and writers focus entirely on health-related products, services, and in-depth studies. A board of medical professionals reviews our content so you can trust it completely. Helping you make the most of your healthcare has been our business for the past 20 years.

Data and recommendations are constantly updated to reflect the latest research.

In the sprawling and evolving home health industry, not a week goes by without the introduction of new products, services, or brand new companies. We constantly update our reviews and guides to deliver the latest, most accurate recommendations. You can count on us.

A check box being selected

1.5

million

Health-related purchasing decisions guided.