Is Isometric Training “Worth It,” New Research on 10 Minutes of Exercise Per Day, NATURAL Alternatives to Metformin & More, Solosode & Q&As — 498

Ben Greenfield

Mar 14, 2026

Episode description

Full Show Notes: bengreenfieldlife.com/498

In this solosode I kick off by talking about whether isometric training is worth your time, covering both my own fitness habits and the newest research, particularly for runners and joint health. I also unpack a buzzworthy study on how just 10 minutes of vigorous exercise daily can be a powerful longevity booster compared to longer, lighter workouts.

I share why I no longer personally use metformin, and instead, offer my favorite natural alternatives for better blood sugar control—like berberine, fiber, cinnamon, and simple routines like salads and walks. Plus, I get into brain health, explaining the roles of ketones, methylene blue, and near-infrared light for cognitive performance and protecting against issues like Alzheimer’s. At the end, I answer listener questions on optimizing DHT levels, natural insulin-sensitizers, and keeping your hair healthy even if you’re on testosterone. If you’re interested in practical strategies and learning what’s currently working in my own routine, you’ll enjoy this episode.

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Mindsip insights from this episode:

Combine methylene blue, ketones, and near-infrared light for brain health

A powerful combination for brain health involves using methylene blue, ketones, and near-infrared light together, especially when sleep-deprived or inflamed.

#biohacking

#infrared

Experience focus without nicotine using 'Set' pouch

A pouch called 'Set' uses serotine and L-theanine to deliver focus and nicotine-like satisfaction with fewer downsides like microplastics.

#focus

#supplement

Enhance running economy with isometric training

Recent research shows isometric training improves tendon stiffness and running economy in runners without adding significant muscle mass or soreness.

#endurance

#exercise

Use ketones to protect brain during sports activities

Taking ketones before sports like rugby may limit brain damage from a potential concussion by providing the brain with a more stable fuel source.

#concussion

#nutrition

Choose alternatives like dihydroberberine and myoinositol for blood glucose control

For healthy people, alternatives like dihydroberberine, myoinositol, or apple cider vinegar can control blood glucose without metformin's negative effects on exercise adaptation.

#glucose

#metformin

Engage in 10 minutes of vigorous exercise for maximum mortality reduction

The biggest reduction in mortality comes from around 10 minutes of vigorous physical activity per day, which is dramatically more time-efficient than moderate or light exercise.

#exercise

#mortality

Stabilize blood sugar with cold shower and post-meal walk

A simple strategy to stabilize blood glucose after a large meal is to take a cold shower before and go for a 10-15 minute walk after eating.

#cold-therapy

#glucose

Limit vigorous exercise to reduce cardiac inflammation risk

Exceeding 75 minutes of vigorous physical activity per week can paradoxically increase the risk of cardiac inflammation, calcium scores, and atherosclerosis.