#262 - AMA #49: Heart rate recovery, strength training, rucking, kidney function, and brain health
In AMA #49, Peter Attia, joined by Nick Stenson, covers exercise (rucking, strength training, cardio, heart rate recovery), kidney health metrics and age-related decline, and brain health topics like homocysteine and alcohol.
Deep Dive Analysis
7 Topic Outline
Introduction to AMA Episode 49 and Topics Overview
Starting Rucking: Initial Weight and Progression
Rucking Gear: Waistbands and Pack Setup
Recommended Footwear for Rucking on Varied Terrain
Benefits of Rucking for Women's Bone Health
Zone 2 Rucking on a Treadmill and Shuffle Technique
Transitioning from Building to Maintaining Strength
5 Questions Answered
The starting weight for rucking is highly dependent on an individual's fitness level; it's recommended to start low, perhaps with just an empty backpack, and gradually increase, not exceeding about one-third of body weight.
Most people benefit from a hip belt (waistband) on a ruck pack because it allows more of the weight to be carried on the hips rather than solely on the shoulders.
While minimalist shoes are suitable for everyday walking, for rucking on uneven terrain, a somewhat supported shoe or boot with a slight heel-to-toe drop (e.g., 8mm) is recommended to provide support and reduce the risk of ankle injury.
Yes, any load-bearing activity like rucking is beneficial for bone mineral density, but it should be considered an adjunct to weightlifting, which is the primary and most impactful activity for strengthening bones across the entire body.
Yes, Zone 2 rucking can be done on a treadmill by setting the speed to a moderate pace (e.g., 2.5 to 3 miles per hour) and gradually increasing the incline to achieve the desired heart rate zone.
6 Actionable Insights
1. Start Rucking Safely
Begin rucking with a low weight, even an empty pack, to allow your body to adapt and prevent injury, ensuring you enjoy the activity. Gradually increase the weight, stopping at around one-third of your body weight, and only add more if the previous ruck felt easy.
2. Optimize Ruck Pack Fit
Experiment with your ruck pack’s waistband, front strap, and shoulder straps to distribute weight effectively. Prioritize using a hip belt to shift more weight onto your hips and off your shoulders, which can enhance comfort and reduce strain.
3. Choose Supportive Rucking Footwear
When rucking, especially on uneven terrain or with significant weight, opt for a supportive shoe or boot (e.g., with an 8mm drop) rather than a minimalist shoe. This provides extra support to reduce the risk of ankle injuries, reserving minimalist shoes for controlled environments.
4. Rucking for Bone Health
Incorporate rucking as a beneficial load-bearing activity to support bone mineral density, particularly for women. However, understand that lifting weights (e.g., pressing, pulling, carrying heavy things) is the primary and most impactful method for strengthening bones across the entire body.
5. Achieve Zone 2 Rucking on Treadmill
To engage in Zone 2 rucking indoors, set your treadmill speed to 2.5-3 miles per hour and progressively increase the incline. This method allows gravity to provide resistance, helping you reach your target heart rate zone.
6. Use Shuffle Run for Zone 2 Rucking
For fitter individuals who struggle to reach Zone 2 while rucking, adopt a “shuffle run” technique by keeping knees bent and shuffling feet forward quickly without high lifts. This method is effective for increasing intensity while being gentler on the knees than traditional running.
5 Key Quotes
when in doubt start low and it's if you come back from a ruck and you're like that just felt like i went for a walk there was no additional stress great had more weight the next time
Peter Attia
don't have an ego in it when you're starting and just start slow
Nick Stenson
playing the long game means run fast on the straightaway and slow on the curves a little bit
Peter Attia
you really have to lift weights there is no substitute right nothing else matters
Peter Attia
there's no question i look like an absolute idiot doing this it's it's it's undeniable
Peter Attia