During vigorous intensity physical activity, you should

Question

be able to talk and breathe normally
be able to talk but have a hard time breathing
not be able to talk but not be completely out of breath
not be able to talk and be completely out of breath

Answer 1

During vigorous intensity physical activity, you should not be able to talk and be completely out of breath. At this level of intensity, you are working hard enough that holding a conversation is very challenging, and you may feel quite breathless.