Jordan Feigenbaum, Founder of Barbell Medicine, has an academic background including a Bachelor of Science in Biology, Master of Science in Anatomy and Physiology, and Doctor of Medicine. Jordan also holds accreditations from many professional training organizations including the American College of Sports Medicine, National Strength and Conditioning Association, USA Weightlifting, CrossFit, and is a former Starting Strength coach and staff member. He’s been coaching folks from all over the world for over a decade through Barbell Medicine. As a competitive powerlifter, Jordan has competition best lifts of a 640lb squat, 430lb bench press, 275lb overhead press, and 725lb deadlift as a 198lb raw lifter.
If you are healthy and still active, a week or two off will not cost you meaningful muscle. Strength fades faster than size because a large part of it is skill, and it returns quickly once you do. What you actually lose depends on why you stopped, and for most people the honest answer is: […]
You can train a six-year-old. You can train a 96-year-old. The adaptive response to resistance training is the same at both ends. In one of the most-cited trials in geriatrics, ten frail nursing-home residents with a mean age of 90 enrolled in eight weeks of high-intensity resistance training. On average, they gained 174% in quadriceps […]
In 1989, in a research ward at the Hebrew Rehabilitation Center in Boston, Dr. Maria Fiatarone enrolled ten frail nursing home residents in a strength training protocol that ran against the clinical consensus of the era. The mean age was 90. The youngest subject was 86. The oldest was 96. Eight of the ten had […]
Real-world data show that adults on GLP-1 medications are hitting roughly 38% of the recommended protein target. The instructions for fixing that are not where most users are looking. Adults taking semaglutide and tirzepatide are eating about 0.6 grams of protein per kilogram of body weight per day. The new Dietary Guidelines for Americans recommend […]
Medically reviewed by Austin Baraki, MD · Reviewed quarterly Sarcopenia is not the age-related decline in muscle size most people think it is. It is a syndrome of low muscle strength and impaired physical function, and the process that produces it starts in the nervous system long before atrophy shows up on a scan or […]
Scientifically reviewed by Austin Baraki, MD, FACP In Chicago in 1944, in an army hospital ward at Gardiner General Hospital, Thomas DeLorme experimented with a rehabilitation approach his colleagues considered unorthodox. The patient was Sergeant Walter Easley, a paratrooper who had ruptured both his anterior cruciate ligament and his medial collateral ligament when he landed […]
Medically reviewed by Austin Baraki, MD · Reviewed quarterly Based on Signal: What Testosterone Levels Are Telling You About Your Health Half. That is the share of men with an initial low testosterone value who come back normal on a repeat draw without any treatment. The finding comes from a long-running study of more than […]
Medically reviewed by Austin Baraki, MD | Reviewed quarterly Two-thirds. That is approximately how much of the weight people regain within a year of stopping semaglutide, based on the STEP 1 trial extension.¹ The trial had produced an average weight loss of about 17% of body weight over 68 weeks. One year after the last […]
Medically reviewed by Austin Baraki, MD An evidence-based review of creatine supplementation during GLP-1–assisted weight loss. The Short Answer Creatine monohydrate is one of the best-studied supplements in sports nutrition, and its effects on body composition are modest. On a GLP-1, creatine will not prevent the lean-mass drop that shows up on a DXA scan, […]
Medically reviewed by Austin Baraki, MD · Reviewed quarterly A clinical evidence review of muscle loss, body composition, and physical function during GLP-1–assisted weight loss. Thirty-eight to thirty-nine percent. That is the share of total weight lost that registered as “lean mass” on the body-composition scans in STEP-1, the landmark semaglutide trial published in the […]