Peter Attia· MD
people always ask me hey Peter when you're doing your ruck is that a Zone two workout for you and the answer is no it's a Zone one zone four but it's it's never just I'm never just a steady state heart rate of 130 to 140 at least I just haven't the only way I can do that is The Ruck Shuffle
Verbal pushback — no audited source on record.
90