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@deleted
o.k, must have been misled by the numerous sources of this such as gyms, 220 mag,
however, if you can get heart to 220 and maintain for any length of time, and your not 12 years old,(or in bed dreaming) Im truly happy for you.
In years of doing heart rate testing, havent come across many adults at all who can,
but this is the internet of course.