Can't talk. : In general, if you don't have enough breath to talk during the activity...Then it's vigorous. But sports docs and cardiologists have more specific parameters depending on your goals.
Answered 5/6/2016
5.2k views
Easy: Moderate means it is difficult to sing and vigorous means it is difficult to carry on a conversation.
Answered 4/1/2013
5.2k views
6 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
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