Which exercise best builds endurance? 1.pull-ups

2.swimming

3.stretching

4.crunches

Increasing the intensity of an exteriors will increase the strength of a muscle true or false

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.

Is tea good for you? if so what type of tea is good for you? and how much should i drink before it is a threat to my health?