Ravi Desai

About the author

Ravi covers health, fitness and sleep science, with a focus on habits that are easy to keep.

Walking and Weight Training May Not Be Enough for Your Bones, a Review of 24 Studies Suggests

A meta-analysis of 24 studies and 1,238 healthy adults found the biggest bone-marker response in football and handball, not walking or gym lifting. Here’s the fine print.

More REM Sleep Was Linked to Lower Risk of 83 Diseases in a Study of 95,559 Adults. Here’s the Fine Print

A UK Biobank study using wrist sensors linked more REM sleep to lower risk of 83 diseases. The authors say it can’t prove cause and effect.

Short Sleep Added About a Pound in Six Weeks in a 95-Adult Study. Here’s the Fine Print

Adults who delayed bedtime by 90 minutes for six weeks gained about a pound on average in a pooled analysis of randomized trials. Here is what the study did and what it can’t tell us.

Two Servings of Peanuts a Day Improved Brain Insulin Response in a 31-Person Trial

A small Dutch crossover trial found 16 weeks of daily peanuts improved insulin responsiveness in memory-related brain regions. Here’s the fine print.

Regular Tea Drinkers Had Fewer Heart and Vascular Problems in a 486,000-Adult Study

A study of nearly 486,000 adults in China linked regular tea to an 11% lower risk of vascular disease. The catch: very hot tea was linked to higher risk.

Two Years of High-Dose Fish Oil Did Not Improve Memory in a 365-Person Trial

A two-year randomized trial found 2,000 mg of daily DHA reached the brain but did not improve memory or stop hippocampal shrinkage in at-risk older adults. Here is the fine print.

Wall Squats Lowered Blood Pressure in a 100-Person Trial. Doing Them Less Often Kept Part of the Gain

In a randomized trial of 100 adults, home wall squats cut systolic pressure, and one or two weekly sessions kept some of the benefit. The catch: it was short and small.

Halloween Night Is Riskier for Young Pedestrians. Here’s What the Research Says, and How to Stay Safe

A study of 42 years of U.S. crash data found pedestrian deaths rise on Halloween evening, especially among kids ages 4 to 8. Here is what that means and how families and drivers can lower the risk.

Lab Study Finds Many Low-Calorie Sweeteners Alter Gut Bacteria. Here’s the Fine Print

A Cambridge lab study tested 39 sweeteners on 25 gut bacteria species and found most affected at least one. It was done in dishes, not people, so here is what it can and can’t tell you.

Just 10 Minutes of Daily Exercise Was Linked to Deeper Sleep in a Study of Young Adults

A Fitbit-based study of University of Texas students linked as little as 10 minutes of daily activity to more deep sleep. Here’s the fine print.

Flu Shot Season: What to Know Before the End of October

The CDC recommends getting a flu vaccine by the end of October. Here’s who should get one, what’s new for 2026–27 and answers to common questions.

Hard Intervals Helped Adults in Their 70s Lose Fat Without Losing Lean Mass, a 6-Month Study Finds

In a trial of 123 healthy older adults, high-intensity interval training trimmed fat while preserving lean mass. Other research is more mixed, and the differences were small.
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