If you're wondering how to stick with your favorite workout but make it more intense, the"talk test" might be your answer.
The talk test is a way to measure relative intensity of an activity, and it relies on understanding how physical activity affects heart rate and breathing, according to the US Centers for Disease Control and Prevention. Generally, being able to talk but not sing during an activity would make it moderate intensity, the CDC says. Your voice might be labored, said physical therapist Nicholas Rolnick, but you can carry on a conversation.
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