hebel. today · 11 November 202650 / 73
Health · Longevity
Cells struggle to process energy as they age
Martin Picard of Columbia University and Nirosha Murugan of Wilfrid Laurier University identified a root cause of aging in Cell Metabolism: cells struggling to convert food into usable energy. Mitochondria capture energy by passing…
From 3 newsletters · 1 min read · one thing to try
Martin Picard of Columbia University and Nirosha Murugan of Wilfrid Laurier University identified a root cause of aging in Cell Metabolism: cells struggling to convert food into usable energy. Mitochondria capture energy by passing electrons toward oxygen, but when this flow becomes overloaded, electrons leak to form reactive oxygen species that drive inflammation and molecular damage (Forever Young). Chronic stressors raise the resistance to this energy flow, while sleep and physical activity lower it, allowing cells to operate at what Picard calls optimal energy resistance.
Resistance training provides a direct method to hold off the frailty associated with this cellular decline. A 1990 study in the New England Journal of Medicine found that frail individuals in their 80s and 90s doubled their strength in eight weeks after starting a resistance program, with some participants discarding their canes (Stay Young*). While beginners can combine lifting and cardio without compromising muscle gains, a 2021 meta-analysis by Henrik Petré found that trained athletes lose explosive strength if they perform both in the same session, though this interference disappears when sessions are separated by at least three hours (Abel Orozco from Strength First Athlete).
Try today · 30 min
Perform a resistance training session targeting your major muscle groups to maintain metabolic function.
Focus on compound movements like squats or presses that engage large muscle groups.
You need
- Dumbbells or resistance bands
- A stable floor space
Steps
- Select a weight that makes the final repetitions of each set feel challenging.
- Perform two sets of 10-12 repetitions for a squatting movement.
- Perform two sets of 10-12 repetitions for a pushing movement.
- Perform two sets of 10-12 repetitions for a pulling movement.
- Rest for 90 seconds between each set.