Question

True or false. Vigorous exercise should privide a significant challenge to your cardiovascular system?

Answer 1

It is true   and type of exercise should help their cardiovascular system
cardio means heart
example: when you run your heart beats really fast.

Answer 2

True. Vigorous exercise provides significant challenge because your heart rate increases causing more blood to be pumped to your limbs which is needed to maintain good blood circulation and metabolism.