Brown Fat Gets Real: What Cold Exposure Studies Show in Adults
Three 2009 New England Journal studies confirm adults carry cold-activated brown fat. What the evidence says about browning, energy use, and real fat loss.
Research
New findings from exercise science, cardiology and sleep research — translated into plain English with sample sizes included.
All articles in Research
Exercise for Depression: What Treatment Comparisons Can Tell Us
Read the exercise evidence for depression without confusing pooled effects with a personal prescription or a reason to stop medication.
Fitness May Predict Survival Better Than Smoking or Diabetes
Two landmark analyses covering more than 870,000 treadmill tests found low cardiorespiratory fitness predicted death more strongly than smoking or diabetes.
Two Hours in Nature a Week: The Threshold Study
A 2019 study of 19,806 UK adults found that at least 120 minutes a week in nature was linked to better self-reported health and wellbeing.
Seven Hours: The Sleep Consensus Most Adults Ignore
In 2015 the American Academy of Sleep Medicine and Sleep Research Society set 7 hours as the adult minimum. About one in three US adults falls short.
Muscle Strength and Mortality: Read the Measurements Carefully
Separate measured strength from reported resistance training when reading mortality studies, pooled associations and dose-response curves.
