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Category Archives: Scaffter Thoughts

Your Workout Burns Fewer Calories Than You Think

Our bodies compensate for at least a quarter of the calories we expend during exercise, undermining our best efforts to lose weight by working out.

By Gretchen Reynolds

Sept. 22, 2021, 5:00 a.m. ET

For every 100 calories we might expect to burn as a […]

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How to Choose a Pair of Running Feet

Dr. Jack Scaff, MD Read More

How Will the New COVID-19 Variants Affect Our Vaccine Strategy?

Angela Dunn, MD, MPH, is a public health physician who seeks to ensure all individuals have good information at their fingertips to make the best health decisions.

March 29, 2021, 12:17PM (PT)

Key takeaways:

Viruses mutate a lot, and sometimes mutations impact how […]

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Moderna’s Covid Vaccine: What You Need to Know

Last Updated Nov. 16, 2020, 8:13 p.m.

A patient receiving an injection during a safety study of Moderna’s vaccine candidate earlier this year.

By Carl Zimmer

On Monday, the Massachusetts-based company Moderna reportedpromising preliminary results from its coronavirus vaccine trial. Coming just a week […]

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How to Run a Race in a Time of Surging Coronavirus

Runners must decide whether we feel comfortable racing in-person and, if so, how we can best protect ourselves and others.

By Gretchen Reynolds

Oct. 28, 2020, 5:00 a.m. ET

·  ·  ·  Competitive runners could soon face a familiar 2020 dilemma, as some race directors tiptoe forward with […]

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Why Running Won’t Ruin Your Knees

Running pummels knees more than walking does, but in the process it may fortify and bulk up cartilage, helping stave off knee arthritis.

By Gretchen Reynolds

Published Oct. 21, 2020 Updated Oct. 22, 2020

·  ·  ·  Could running actually be good for your knees?

That idea is […]

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How Exercise May Bolster the Brain

Exercise prompts the liver to pump out a little-known protein that appears to rejuvenates the brain, a new study found.

By Gretchen Reynolds

Exercise may help change exercisers’ brains in surprising ways, according to a new study of physical activity and brain […]

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How Hot is Too Hot?

The human body can survive at surprisingly high temperatures, so long as you’re prepared to sweat.

By Randall Munroe “What is the hottest ‘room’ temperature at which a human body can, by sweating, keep itself cool enough to avoid health damage?”

— Matt B., […]

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Taming Pain with Topical Products

By Wellness Letter

When aches and pains set in, many people turn to over-the-counter (OTC) topical pain reliev­ers, available as patches, creams, gels, foams, and even roll-ons, sticks, and sprays. Often filling multiple shelves in drugstores, these products go by such names […]

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Another Great Reason to Exercise

A Single Session of Exercise Alters 9,815 Molecules in Our Blood

The extensive molecular changes that occur during and after working out underscore how consequential activity is for our bodies and health.

By Gretchen Reynolds

When we exercise, the levels of thousands of substances […]

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