interpretation of intercept and regression coefficient

This is a multiple linear regression problem with two independent variables.
dependent: blood pressure
independent: stress and age
The raw regression coefficients for x1(stress) and x2(age) are 1.373(stress) and 0.581(age)
The intercept is (0,68.969)
I need to interpret the values I obtained for the intercept (68.969) and also for x2(0.581) but am unsure how to interpret them.