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by saberience 1899 days ago
You're probably doing it wrong? Try running 400m flat out sprints with 1 min rest between each one and tell me how high your heart rate gets.
1 comments
Swizec 1899 days ago
According to my watch, I have pretty good recovery. 150bpm down to 120 or less in 1min

Boxing for 10 years trained that into me very well. 1min rest between 3min rounds

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